BODY MEASUREMENTS                               
                                                                                
                                                                                
     Body measurements were recorded for all examinees by a trained             
     examiner in the mobile examination center (MEC).  The protocol for this    
     component did not detail any medical, safety or other exclusions.          
                                                                                
     The body measurements examination included measures of weight, standing    
     height, lengths, skinfolds, circumferences, and breadths.  In              
     cases when examinees had to leave the MEC early and were unable            
     to participate in the complete body measures component, at a               
     minimum, weight and standing height or recumbent length were               
     measured.                                                                  
                                                                                
     Persons aged under one year or 20 years and over who were examined only    
     in their homes were given a subset of the body measures.  These measures   
     were taken by trained technicians who used equipment and procedures        
     comparable to those used in the mobile examination centers.  Therefore,    
     the home examination body measures were incorporated into the body         
     measures data set.                                                         
                                                                                
     To determine which subjects were home examinees, the DMPSTAT               
     variable (3=home-examined) should be used.  When analyzing data            
     for combined home-examined and MEC-examined subjects, the                  
     combined MEC- plus home-examined sample weights should be used             
     (WTPFHX6).  When using only MEC items or measures, the MEC                 
     examination sample weight should be used (WTPFEX6).  For more              
     information on the use of sample weights in the NHANES III data            
     analysis, refer to the Analytic and Reporting Guidelines (U.S.             
     DHHS, 1996b).                                                              
                                                                                
     The following are the names shown on the Home Examination form in the      
     Plan and Operation of the Third National Health and Nutrition              
     Examination Survey, 1988-1994 (original home exam variable name; new       
     name) for home examination body measures (NCHS, 1994, p. 313; U.S. DHHS,   
     1996b).  In the home exam, the only body measures taken were weight (A1;   
     BMPWT), standing height (A2; BMPHT), arm circumference (A6; BMPARMCI),     
     and triceps skinfold (A5; BMPTRI). For infants aged less than one year,    
     recumbent length (A3; BMPRECUM) was measured instead of stature, and       
     head circumference (A4; BMPHEAD) was added.  For examinees who received    
     only a home examination, the measures listed above are the only body       
     measures available for analysis.  Values for all other body measures for   
     these examinees appear as blank.                                           
                                                                                
                                                                               
                                                                                
                                                                                
     Bioelectrical impedance analysis (BIA) data are considered a part          
     of body measurements and have been included with the body                  
     measurement data.  However, the BIA resistance and reactance               
     measures were recorded by the physicians in the physician's                
     examination component, hence the "PEP" variable prefix.                    
                                                                                
     For general guidelines on standard procedures that were followed           
     for the anthropometric measures, refer to The Anthropometric               
     Standardization Reference Manual (Lohman, 1988).  For specific             
     guidelines, the Anthropometric Procedures Video that demonstrates          
     the NHANES III anthropometric procedures in detail is available            
     from the U.S. Government Printing Office (U.S. DHHS, 1996a).               
                                                                                
     The MEC health technicians, ultrasonographers, dentists, and home          
     examination health technicians were trained by two trainers to do          
     the anthropometric measurements.  The two trainers were                    
     cross-standardized initially and then annually during the survey.          
     Group retraining occurred twice during the survey.  Periodic               
     visits to the field by each of the trainers assured ongoing                
     quality control in the accuracy and reliability of the                     
     procedures.                                                                
                                                                                
     This data set includes body measurements for women who were                
     pregnant at the time of the exam.  Analysts should determine               
     whether it is appropriate to exclude data for these women for a            
     given analysis.  Pregnancy status information is found in the              
     variable MAPF12R in the MEC Adult Questionnaire and in the                 
     variable MYPC17 in the MEC Youth Questionnaire.                            
                                                                                
     During the editing process, outliers were scrutinized using                
     univariate and multivariate methods to help identify implausible           
     values.  When there was insufficient information to conclude that          
     values were invalid, they were left in the data set.  Analysts             
     should examine the data spread and consider whether it is                  
     appropriate to include or exclude extreme values in a given                
     analysis.                                                                  
                                                                                
     Data processing and editing were performed to ensure internal              
     data consistency.  Notes have been provided for variables                  
     requiring additional explanation.                                         
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                              GENERAL INFORMATION                               
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
        1503-1507          Examiner number                                      
      BMPTECH1    30426    01001-09018                                          
                    392    88888 Blank but applicable                           
                    493    Blank                                                
                                                                                
                                                                               
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                                     WEIGHT                                     
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
        1508-1513          Weight (kg)                                          
      BMPWT                (2 months and over)                                  
                  31132    0002.8-0241.8                                        
                    179    888888  Blank but applicable                         
                                                                                
             1514          Weight source flag                       See note    
      BMPWTFLG    30324    0     No substitution                                
                    667    3     Modeled from reported value                    
                    320    4     Reported value                                 
                                                                                
        1515-1519          Weight (lbs)                             See note    
      BMPWTLBS             (2 months and over)                                  
                  31132    006.2-00532                                          
                    179    88888 Blank but applicable                           
                                                                                
        1520-1523          Self-reported weight (lbs)               See note    
      BMPSRWL              (12-16 years)                                        
                   1673    0078-0350                                            
                    406    8888  Blank but applicable                           
                  29232    Blank                                                
                                                                                
        1524-1527          Body mass index                          See note    
      BMPBMI      27830    07.3-79.6                                            
                    227    8888  Blank but applicable                           
                   3254    Blank                                                
                                                                                
                                                                               
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                                HEIGHTS, LENGTHS                                
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
        1528-1532          Standing height (cm)                                 
      BMPHT                (2 years and over)                                   
                  27935    073.6-206.5                                          
                    122    88888 Blank but applicable                           
                   3254    Blank                                                
                                                                                
             1533          Standing height source flag              See note    
      BMPHTFLG    27514    0     No substitution                                
                    226    1     Modeled from spirometry height                 
                     66    2     Spirometry height                              
                    241    3     Modeled from reported value                    
                     10    5     Recumbent length                               
                   3254    Blank                                                
                                                                                
        1534-1538          Standing height (in)                     See note    
      BMPHTIN              (2 years and over)                                   
                  27935    00029-081.3                                          
                    122    88888 Blank but applicable                           
                   3254    Blank                                                
                                                                                
        1539-1543          Recumbent length (cm)                                
      BMPRECUM             (2 months-3 years)                                   
                   5525    039.1-119.5                                          
                    118    88888 Blank but applicable                           
                  25668    Blank                                                
                                                                                
             1544          Recumbent length flag                    See note    
      BMPRECFL     5466    0     No substitution                                
                     42    3     Modeled from reported value                    
                    135    6     Stature                                        
                  25668    Blank                                                
                                                                                
        1545-1549          Sitting height (cm)                                  
      BMPSITHT             (2 years and over)                                   
                  27009    036.9-110.2                                          
                    590    88888 Blank but applicable                           
                   3712    Blank                                                
                                                                                
                                                                               
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                                HEIGHTS, LENGTHS                                
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
        1550-1552          Self-reported height (in)                See note    
      BMPSRHIS             (12-16 years)                                        
                   1957    036-091                                              
                    122    888   Blank but applicable                           
                  29232    Blank                                                
                                                                                
        1553-1556          Upper leg length (cm)                                
      BMPLEG               (2 years and over)                                   
                  26313    12.9-58.1                                            
                   1286    8888  Blank but applicable                           
                   3712    Blank                                                
                                                                                
        1557-1560          Knee height (cm)                                     
      BMPKNEE              (60 years and over)                                  
                   4938    0032-63.3                                            
                    364    8888  Blank but applicable                           
                  26009    Blank                                                
                                                                                
        1561-1564          Upper arm length (cm)                                
      BMPARML              (2 months and over)                                  
                  29606    06.2-64.8                                            
                   1212    8888  Blank but applicable                           
                    493    Blank                                                
                                                                                
                                                                               
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                                    BREADTHS                                    
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
        1565-1568          Biacromial breadth (cm)                              
      BMPBIAC              (3 years and over)                                   
                  25357    15.3-58.3                                            
                    973    8888  Blank but applicable                           
                   4981    Blank                                                
                                                                                
        1569-1573          Biiliac breadth (cm)                                 
      BMPBIIL              (2 years and over)                                   
                  26352    009.8-048.7                                          
                   1247    88888 Blank but applicable                           
                   3712    Blank                                                
                                                                                
        1574-1577          Elbow breadth (cm)                                   
      BMPELB               (2 years and over)                                   
                  26541    0003-10.4                                            
                   1058    8888  Blank but applicable                           
                   3712    Blank                                                
                                                                                
        1578-1581          Wrist breadth (cm)                                   
      BMPWRIST             (2 years and over)                                   
                  26536    02.7-08.3                                            
                   1063    8888  Blank but applicable                           
                   3712    Blank                                                
                                                                                
                                                                               
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                                 CIRCUMFERENCES                                 
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
        1582-1585          Head circumference (cm)                              
      BMPHEAD              (2 months-7 years)                                   
                   8609    34.4-58.1                                            
                    259    8888  Blank but applicable                           
                  22443    Blank                                                
                                                                                
        1586-1589          Arm circumference (cm)                               
      BMPARMC              (2 months and over)                                  
                  30020    0009-61.2                                            
                   1291    8888  Blank but applicable                           
                                                                                
        1590-1594          Waist circumference (cm)                             
      BMPWAIST             (2 years and over)                                   
                  26288    034.5-174.1                                          
                   1311    88888 Blank but applicable                           
                   3712    Blank                                                
                                                                                
        1595-1599          Buttocks circumference (cm)                          
      BMPBUTTO             (2 years and over)                                   
                  26290    027.8-179.2                                          
                   1309    88888 Blank but applicable                           
                   3712    Blank                                                
                                                                                
        1600-1603          Waist-to-hip ratio                       See note    
      BMPWHR      26236    0.51-2.09                                            
                   1363    8888  Blank but applicable                           
                   3712    Blank                                                
                                                                                
        1604-1608          Thigh circumference (cm)                             
      BMPTHICI             (2 years and over)                                   
                  26188    00016-093.8                                          
                   1411    88888 Blank but applicable                           
                   3712    Blank                                                
                                                                                
                                                                               
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                                   SKINFOLDS                                    
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
        1609-1612          Triceps skinfold (mm)                    See note    
      BMPTRI               (2 months and over)                                  
                  29571    01.9-48.5                                            
                    311    5555  Skinfold too large for caliper                 
                   1429    8888  Blank but applicable                           
                                                                                
        1613-1616          Subscapular skinfold (mm)                See note    
      BMPSUB               (2 months and over)                                  
                  28502    02.8-0049                                            
                    397    5555  Skinfold too large for caliper                 
                   1919    8888  Blank but applicable                           
                    493    Blank                                                
                                                                                
        1617-1620          Suprailiac skinfold (mm)                 See note    
      BMPSUP               (2 years and over)                                   
                  25487    02.3-49.4                                            
                    636    5555  Skinfold too large for caliper                 
                   1476    8888  Blank but applicable                           
                   3712    Blank                                                
                                                                                
        1621-1624          Thigh skinfold (mm)                      See note    
      BMPTHI               (2 years and over)                                   
                  23814    02.2-49.5                                            
                   1574    5555  Skinfold too large for caliper                 
                   2211    8888  Blank but applicable                           
                   3712    Blank                                                
                                                                                
                                                                               
                                                                                
                        NHANES III Examination Data File                        
                                                                                
    ------------------------------------------------------------------------    
                               BODY MEASUREMENTS                                
    ------------------------------------------------------------------------    
                     BIOELECTRICAL IMPEDANCE ANALYSIS (BIA)                     
    ------------------------------------------------------------------------    
    Positions            Item description                                       
    SAS name    Counts       and code                               Notes       
    ------------------------------------------------------------------------    
                                                                                
             1625          Examinee pregnant--cannot obtain BIA     See note    
      PEPPREG       197    1     Yes                                            
                  17840    2     No                                             
                   1662    8     Blank but applicable                           
                     85    9     Don't know                                     
                  11527    Blank                                                
                                                                                
             1626          Examinee had pacemaker--cannot           See note    
      PEPPACE              obtain BIA                                           
                     41    1     Yes                                            
                  17996    2     No                                             
                   1738    8     Blank but applicable                           
                      9    9     Don't know                                     
                  11527    Blank                                                
                                                                                
        1627-1630          BIA resistance (ohms)                    See note    
      PEP12A1              (12 years and over)                                  
                  17726    0269-0950                                            
                   1820    8888  Blank but applicable                           
                  11765    Blank                                                
                                                                                
        1631-1634          BIA reactance (ohms)                     See note    
      PEP12B1              (12 years and over)                                  
                  17712    0013-0135                                            
                   1834    8888  Blank but applicable                           
                  11765    Blank                                                
                                                                                
                                                                               
                                                                                
     NOTES                                                                      
                                                                                
                                                                                
     BMPBMI:  Body mass index                                                   
                                                                                
          BMPBMI was computed from weight and standing height using the         
          following formula:  BMPBMI=BMPWT/((BMPHT/100)**2).                    
                                                                                
                                                                                
     BMPHTFLG, BMPRECFL, BMPWTFLG:  Standing height, recumbent length, and      
               weight source flags                                              
                                                                                
          Weight, standing height, and recumbent length are fundamental         
          body measures essential to most analyses of other health              
          examination data.  Therefore, during data editing, a special          
          procedure was established and followed only for those three           
          variables when the primary measures were missing.  This               
          procedure allowed available alternate source data to be               
          substituted for missing primary source data.  In selected             
          cases, when data were absent from the primary health                  
          examination, the source of the substitution is indicated by a         
          derived indicator (flag) variable (i.e., BMPWTFLG, BMPHTFLG,          
          BMPRECFL).  These substitutions were derived from tests on            
          the actual data and evaluated and selected using cross-               
          validations on the actual data; they yielded satisfactory             
          results with R-squared values and correlations.  The flag             
          values range from 00 to 06, and corresponding interpretations         
          of these flag codes have been summarized as follows:                  
                                                                                
          00   No substitution                                                  
          01   Modeled from spirometry height (i.e., standing height            
               measured in the spirometry exam)                                 
          02   Direct substitution for standing height from spirometry          
               standing height                                                  
          03   Modeled from interview reported value                            
          04   Direct substitution for weight from reported weight              
          05   Direct substitution for standing height from measured            
               recumbent length                                                 
          06   Direct substitution for recumbent length from measured           
               standing height                                                  
                                                                                
          The approach to obtain substitutions for "Blank but                   
          applicable" (8-filled) primary recumbent length, standing             
          height, and weight, ranked in order of data availability,             
          included:                                                             
                                                                               
                                                                                
          Recumbent length (age 2-47 months)                                    
                                                                                
          Direct substitution from stature, if present, into recumbent          
          length (age 2-3 years)(code 06).                                      
                                                                                
          If no substitution was possible from stature, a sex-specific          
          model with reported length, race/ethnicity, age (mo),                 
          education of adult reference person, and reported weight was          
          used (code 03).                                                       
                                                                                
                                                                                
          Height (age 2-16 years)                                               
                                                                                
          Direct substitution from recumbent length (age 2-3 years)             
          (code 05).                                                            
                                                                                
          Direct substitution from spirometry height (age 8-16 years)           
          (code 02)                                                             
                                                                                
          If spirometry height was not available, a sex- and                    
          year-of-age-specific model with reported height, race/ethnicity,      
          age (mo), education of adult reference person, and reported           
          weight was used (code 03).                                            
                                                                                
                                                                                
          Height (age 17 years and over)                                        
                                                                                
          A sex-specific model with spirometry height, reported                 
          height, race/ethnicity, age (mo), and reported weight was             
          used (code 01).                                                       
                                                                                
          If spirometry height was not available, a sex-specific model          
          with reported height, race/ethnicity, and age (mo) was used           
          (code 03).                                                            
                                                                                
                                                                                
          Weight (age 2-23 months)                                              
                                                                                
          A sex- and year-of-age-specific model with reported weight,           
          race/ethnicity, age (mo), education of adult reference                
          person, and measured recumbent length was used (code 03).             
                                                                                
                                                                                
          Weight (age 2-11 years)                                               
                                                                                
          Sex- and year-of-age-specific model with reported weight,             
          race/ethnicity, age (mo), education of adult reference                
          person, and measured standing height was used (Code 03).              
                                                                                
                                                                                
          Weight (age 12-16 years)                                              
                                                                                
          Sex- and year-of-age-specific model with reported weight,             
          race/ethnicity, and measured stature was used (code 03).              
                                                                                
                                                                               
          Weight (age 17 years and over)                                        
                                                                                
          A sex-specific model with reported weight, reported weight            
          from bone density screener questionnaire, measured height,            
          race/ethnicity, and age (yr) was used (code 03).                      
                                                                                
          If the above variables were not present, direct substitution          
          from reported weight was used (code 04).                              
                                                                                
                                                                                
     BMPHTIN:  Standing height (in)                                             
                                                                                
          BMPHTIN is standing height converted to inches from                   
          centimeters and was calculated as BMPHTIN=BMPHT/2.54.                 
                                                                                
                                                                                
     BMPRECFL:  Recumbent length source flag                                    
                                                                                
          See note for BMPHTFLG.                                                
                                                                                
                                                                                
     BMPSRHIS and BMPSRWL:  Self-reported height (in) and weight (lbs)          
                                                                                
          BMPSRHIS is a derived variable that converts reported height in       
          feet and inches to total inches.  It is equal to the reported         
          height in feet multiplied by 12 plus the reported height in inches.   
                                                                                
          All NHANES III participants were asked to report their current        
          height in feet and inches and their weight in pounds.  Reported       
          height (BMPSRHIS) and weight (BMPSRWL) information was obtained       
          from adolescents (aged 12 through 16 years) during the body           
          measures component just prior to the actual measurement of            
          weight (BMPWT) and height (BMPHT).  For examinees of all other        
          ages, data for similar reported values can be found in the            
          Household Adult Questionnaire among persons aged over 17              
          years for height (HAM5S) and weight (HAM6S) and in the                
          Household Youth Questionnaire among persons aged less than            
          12 years for height (HYB18S) and weight (HYB19S).  Note that          
          in the data editing process some unusual values for reported          
          height were observed. For persons aged 12 through 16 years,           
          values less than 3 feet were deleted and recoded as "Blank            
          but applicable" (8888).                                               
                                                                                
                                                                                
     BMPSRWL:  Self-reported weight (lbs)                                       
                                                                                
          See note for BMPSRHIS.                                                
                                                                                
                                                                                
     BMPSUB, BMPSUP, BMPTHI, BMPTRI:  Skinfolds                                 
                                                                                
          For NHANES III, the body measurements protocol specified              
          that skinfolds would be measured at four different anatomic           
          body sites.  Independent measures were taken at each body             
          site by two technicians, resulting in a minimum of two                
          skinfold observations for each site.                                  
                                                                                
                                                                               
          If the difference between the two measurements at a given             
          site was within a pre-specified tolerance limit, no further           
          measurements were taken at that site.  The tolerance limits           
          increased by 2 mm for every 10 mm measured.  For the first two        
          measures, the first measure represents the base.  Thus, from 0-10     
          mm, observations were acceptable if they differed from the base       
          measurement by 2 mm or less; from 10-20 mm, observations were         
          acceptable if they differed from the base measurement by 4 mm or      
          less; from 20-30 mm, observations were acceptable if they differed    
          from the base measurement by 6 mm or less, and so on.  If             
          the difference between the two measurements at a given site           
          did exceed the tolerance limit, each technician repeated and          
          recorded a second measurement, resulting in a total of four           
          measurements at that skinfold site.                                   
                                                                                
          The summary skinfold values were computed as follows:                 
                                                                                
          If data were available for the third and fourth measurements          
          and the difference between those measurements was within the          
          specified tolerance limit, then the summary value was the             
          mean of the third and fourth measurements.  In all other              
          cases, the summary value was the mean of all available                
          skinfold measurements at that site.                                   
                                                                                
          Tolerance:  Tolerance was defined using the base skinfold measure.    
          For the third and fourth measures, the third measure represents the   
          base.                                                                 
                                                                                
          If base >  0 and base <= 10 then tolerance is 2 mm                    
          If base > 10 and base <= 20 then tolerance is 4 mm                    
          If base > 20 and base <= 30 then tolerance is 6 mm                    
          If base > 30 and base <= 40 then tolerance is 8 mm                    
          If base > 40 then tolerance is 10 mm.                                 
                                                                                
          This approach resulted in a single skinfold value for each            
          of four anatomic locations in the final analytic data.                
          These four locations were reported as triceps (BMPTRI),               
          subscapular (BMPSUB), suprailiac (BMPSUP), and thigh                  
          (BMPTHI) skinfolds.                                                   
                                                                                
                                                                                
     BMPSUP:  Suprailiac skinfold (mm)                                          
                                                                                
          See note for BMPSUB.                                                  
                                                                                
                                                                                
     BMPTHI:  Thigh skinfold (mm)                                               
                                                                                
          See note for BMPSUB.                                                  
                                                                                
                                                                                
     BMPTRI:  Triceps skinfold (mm)                                             
                                                                                
          See note for BMPSUB.                                                  
                                                                                
                                                                                
                                                                               
     BMPWHR:  Waist-to-hip ratio                                                
                                                                                
          BMPWHR was calculated as BMPWAIST/BMPBUTTO.                           
                                                                                
                                                                                
     BMPWTFLG:  Weight source flag                                              
                                                                                
          See note for BMPHTFLG.                                                
                                                                                
                                                                                
     BMPWTLBS:  Weight (lbs)                                                    
                                                                                
          BMPWTLBS is weight converted to pounds from kilograms and             
          was calculated as BMPWTLBS=BMPWT x 2.2.                               
                                                                                
                                                                                
     PEP12A1 and PEP12B1:  BIA resistance and reactance (ohms)                  
                                                                                
          Data for bioelectrical impedance analysis (BIA) are                   
          considered a part of body measurements and have been                  
          included here with the body measurement data.  However, the           
          BIA resistance and reactance measures were recorded by the            
          physicians in the Physician's Examination component, hence            
          the "PEP" variable prefix.  Analyses that may require the             
          examiner identification for BIA data should use the physician         
          examiner number (PEPTECH).                                            
                                                                                
                                                                                
          BIA measurements are known to be affected by a variety of             
          factors, including amputations, metal replacements, and               
          pregnancy.  Persons who were left-side amputees or had metal          
          pins in their hips with hip replacements were not excluded            
          from receiving the BIA procedure.  However, in the data               
          editing process, BIA resistance (PEP12A1) and BIA reactance           
          (PEP12B1) data for persons with either right- or left-side            
          amputations, who were pregnant, or who had metal pins in              
          their hips were recoded to 8888.                                      
                                                                                
          The "Blank but applicable" counts for PEP12A1 and PEP12B1             
          reflect cases in which persons were examined by the                   
          physician but in which the BIA procedure was not done for             
          various reasons.  The balance is accounted for by persons             
          who were not examined by the physician.                               
                                                                                
                                                                                
     PEP12B1:  BIA reactance (ohms)                                             
                                                                                
            See note for PEP12A1.                                               
                                                                                
                                                                                
     PEPPACE and PEPPREG:  Pacemaker or pregnancy -- cannot obtain BIA          
                                                                                
            To determine who should be excluded from receiving the BIA          
            procedure as a safety precaution, examinees were asked if they      
            had a pacemaker or were pregnant.  PEPPREG was a self-reported      
            variable and not an adjudicated assessment of pregnancy status;     
            therefore, it should not be used as the definitive pregnancy        
            variable (analysts are referred to MAPF12R and MYPC17 variables     
            for pregnancy status).