DOI: 10.3886/icpsr06439.v1
title: RAND Health Insurance Experiment [in Metropolitan and Non-Metropolitan Areas of the United States], 1974-1982
title: Version 1

description: The Health Insurance Experiment (HIE) was conducted from 1974 to 1982 in six sites across the country: Dayton, Ohio, Seattle, Washington, Fitchburg-Leominster and Franklin County, Massachusetts, and Charleston and Georgetown County, South Carolina. These sites represent four census regions (Midwest, West, Northeast, and South), as well as urban and rural areas. The HIE attempted to determine what effects alternative cost-sharing plans and a staff-model Health Maintenance Organization (HMO) had on the use of medical services and individual health outcomes. The main purpose of the experiment was to assess how the cost of health services affected individuals' use of services, their satisfaction with health care, the quality of their care, and the state of their health. To study the effects of health insurance coverage, a comprehensive method for measuring health and monitoring changes in health over time was developed. Health status was seen as having four dimensions: physical, mental, social, and physiological. Physical health focused on five categories of activities: self-care, mobility, exertion, role fulfillment, and leisure pursuits. Mental health focused on mood and anxiety disorders along with loss of control over feelings, thoughts, and behavior. Social health was assessed by the frequency of several kinds of participation, interaction, and resources, covering family and home, social life, and community involvement. Physiologic health was determined by looking at a number of physical disorders both in adults (aged 14 to 61) and children (aged 0 to 13) that would be easily traced over time and would be responsive to changes in the level and quality of medical care. For adults, acne, congestive heart failure, and sleeping pill and tranquilizer use were considered. For children, variables included allergic conditions (asthma, eczema, hay fever), anemia, middle ear disease, hearing impairment, and vision impairment. Also included were general health measures based on single questions about health-related pain and worry, and a rating of health (excellent, good, fair, poor). Health habits described aspects of smoking, consumption of alcohol, weight, height, and exercise.
description: A probability sample within each site was done by cluster sampling of census tracts and enumeration districts. Between 100 and 300 clusters were chosen in each site and every nth dwelling unit in a cluster was sampled, with n chosen to reach the required number of units for that site. Over the course of the experiment, information of some kind was obtained for 26,148 persons. There were 8,254 insured enrollees assigned to an experimental insurance treatment, and data were collected throughout their period of participation. Another 2,483 adjunct enrollees were not assigned to an insurance treatment but resided with insured enrollees or were members of a control group (669) in Dayton that was disbanded after a year. The remaining 15,411 persons who did not enroll are called "baseline-only" participants.
description: Datasets: DS0: Study-Level Files DS1: Claims Line-Item Series: Fee-for-Service Claims, Data File 1 DS2: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 1 DS3: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 1 DS4: Claims Line-Item Series: Fee-for-Service Claims, Data File 3 DS5: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 3 DS6: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 3 DS7: Claims Line-Item Series: Fee-for-Service Claims, Data File 4 DS8: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 4 DS9: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 4 DS10: Claims Line-Item Series: Fee-for-Service Claims, Data File 5 DS11: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 5 DS12: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 5 DS13: Claims Line-Item Series: Fee-for-Service Claims, Data File 6 DS14: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 6 DS15: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 6 DS16: Claims Line-Item Series: Fee-for-Service Claims, Data File 8 DS17: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 8 DS18: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 8 DS19: Claims Line-Item Series: Fee-for-Service Claims, Data File 9 DS20: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 9 DS21: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 9 DS22: Claims Line-Item Series: Fee-for-Service Claims, Data File 10 DS23: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 10 DS24: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 10 DS25: Claims Line-Item Series: Fee-for-Service Claims, Data File 11 DS26: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 11 DS27: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 11 DS28: Claims Line-Item Series: Fee-for-Service Claims, Data File 12 DS29: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 12 DS30: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 12 DS31: Claims Line-Item Series: Fee-for-Service Claims, Data File 13 DS32: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 13 DS33: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 13 DS34: Claims Line-Item Series: Fee-for-Service Claims, Data File 15 DS35: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 15 DS36: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 15 DS37: Claims Line-Item Series: Fee-for-Service Claims, Data File 16 DS38: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 16 DS39: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 16 DS40: Claims Line-Item Series: Fee-for-Service Claims, Data File 18 DS41: SAS Data Definition Statements for Claims Line-Item Series: Fee-for-Service Claims, Data File 18 DS42: SAS Transport File for Claims Line-Item Series: Fee-for-Service Claims, Data File 18 DS43: Claims Line-Item Series: HMO Claims, Data File 1 DS44: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 1 DS45: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 1 DS46: Claims Line-Item Series: HMO Claims, Data File 3 DS47: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 3 DS48: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 3 DS49: Claims Line-Item Series: HMO Claims, Data File 4 DS50: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 4 DS51: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 4 DS52: Claims Line-Item Series: HMO Claims, Data File 5 DS53: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 5 DS54: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 5 DS55: Claims Line-Item Series: HMO Claims, Data File 6 DS56: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 6 DS57: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 6 DS58: Claims Line-Item Series: HMO Claims, Data File 8 DS59: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 8 DS60: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 8 DS61: Claims Line-Item Series: HMO Claims, Data File 9 DS62: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 9 DS63: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 9 DS64: Claims Line-Item Series: HMO Claims, Data File 10 DS65: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 10 DS66: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 10 DS67: Claims Line-Item Series: HMO Claims, Data File 11 DS68: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 11 DS69: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 11 DS70: Claims Line-Item Series: HMO Claims, Data File 15 DS71: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 15 DS72: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 15 DS73: Claims Line-Item Series: HMO Claims, Data File 18 DS74: SAS Data Definition Statements for Claims Line-Item Series: HMO Claims, Data File 18 DS75: SAS Transport File for Claims Line-Item Series: HMO Claims, Data File 18 DS76: Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 1 DS77: SAS Data Definition Statements for Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 1 DS78: SAS Transport File for Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 1 DS79: Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 3 DS80: SAS Data Definition Statements for Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 3 DS81: SAS Transport File for Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 3 DS82: Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 6 DS83: SAS Data Definition Statements for Seattle Fee-for-Service Claims for Comparison with HMO, Data File 6 DS84: SAS Transport File for Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 6 DS85: Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 10 DS86: SAS Data Definition Statements for Seattle Fee-for-Service Claims for Comparison with HMO, Data File 10 DS87: SAS Transport File for Claims Line-Item Series: Seattle Fee-for-Service Claims for Comparison with HMO, Data File 10 DS88: Dental Examination: Adults and Children at Enrollment and Exit DS89: SAS Data Definition Statements for Dental Examination: Adults and Children at Enrollment and Exit DS90: SAS Transport File for Dental Examination: Adults and Children at Enrollment and Exit DS91: Medical Disorders Series: Adults at Enrollment and Exit DS92: SAS Data Definition Statements for Medical Disorders Series: Adults at Enrollment and Exit DS93: SAS Transport File for Medical Disorders Series: Adults at Enrollment and Exit DS94: Medical Disorders Series: Children at Enrollment and Exit DS95: SAS Data Definition Statements for Medical Disorders Series: Children at Enrollment and Exit DS96: SAS Transport File for Medical Disorders Series: Children at Enrollment and Exit DS97: Master Sample Series: Supplemental Data DS98: SAS Data Definition Statements for Master Sample Series: Supplemental Data DS99: SAS Transport File for Master Sample Series: Supplemental Data DS100: Reference Series, Volume 2: Provider Data DS101: SAS Data Definition Statements for Reference Series, Volume 2: Provider Data DS102: SAS Transport File for Reference Series Volume 2: Provider Data DS103: Medical History Series: Dayton Adult Enrollment Form A DS104: SAS Data Definition Statements for Medical History Series: Dayton Adult Enrollment Form A DS105: SAS Transport File for Medical History Series: Dayton Adult Enrollment Form A DS106: Medical History Series: Non-Dayton Adult Enrollment Form A DS107: SAS Data Definition Statements for Medical History Series: Non-Dayton Adult Enrollment Form A DS108: SAS Transport File for Medical History Series: Non-Dayton Adult Enrollment Form A DS109: Medical History Series: Adult Exit Form A DS110: SAS Data Definition Statements for Medical History Series: Adult Exit Form A DS111: SAS Transport File for Medical History Series: Adult Exit Form A DS112: Medical History Series: Dayton Adult Enrollment Form B DS113: SAS Data Definition Statements for Medical History Series: Dayton Adult Enrollment Form B DS114: SAS Transport File for Medical History Series: Dayton Adult Enrollment Form B DS115: Medical History Series: Non-Dayton Adult Enrollment Form B DS116: SAS Data Definition Statements for Medical History Series: Non-Dayton Adult Enrollment Form B DS117: SAS Transport File for Medical History Series: Non-Dayton Adult Enrollment Form B DS118: Medical History Series: Adult Exit Form B DS119: SAS Data Definition Statements for Medical History Series: Adult Exit Form B DS120: SAS Transport File for Medical History Series: Adult Exit Form B DS121: Medical History Series: Dayton Infant Enrollment Form A DS122: SAS Data Definition Statements for Medical History Series: Dayton Infant Enrollment Form A DS123: SAS Transport File for Medical History Series: Dayton Infant Enrollment Form A DS124: Medical History Series: Non-Dayton Infant Enrollment Form A DS125: SAS Data Definition Statements for Medical History Series: Non-Dayton Infant Enrollment Form A DS126: SAS Transport File for Medical History Series: Non-Dayton Infant Enrollment Form A DS127: Medical History Series: Infant Exit Form A DS128: SAS Data Definition Statements for Medical History Series: Infant Exit Form A DS129: SAS Transport File for Medical History Series: Infant Exit Form A DS130: Medical History Series: Dayton Infant Enrollment Form B DS131: SAS Data Definition Statements for Medical History Series: Dayton Infant Enrollment Form B DS132: SAS Transport File for Medical History Series: Dayton Infant Enrollment Form B DS133: Medical History Series: Non-Dayton Infant Enrollment Form B DS134: SAS Data Definition Statements for Medical History Series: Non-Dayton Infant Enrollment Form B DS135: SAS Transport File for Medical History Series: Non-Dayton Infant Enrollment Form B DS136: Medical History Series: Infant Exit Form B DS137: SAS Data Definition Statements for Medical History Series: Infant Exit Form B DS138: SAS Transport File for Medical History Series: Infant Exit Form B DS139: Medical History Series: Dayton Child Enrollment Form A DS140: SAS Data Definition Statements for Medical History Series: Dayton Child Enrollment Form A DS141: SAS Transport File for Medical History Series: Dayton Child Enrollment Form A DS142: Medical History Series: Non-Dayton Child Enrollment Form A DS143: SAS Data Definition Statements for Medical History Series: Non-Dayton Child Enrollment Form A DS144: SAS Transport File for Medical History Series: Non-Dayton Child Enrollment Form A DS145: Medical History Series: Child Exit Form A DS146: SAS Data Definition Statements for Medical History Series: Child Exit Form A DS147: SAS Transport File for Medical History Series: Child Exit Form A DS148: Medical History Series: Dayton Child Enrollment Form B DS149: SAS Data Definition Statements for Medical History Series: Dayton Child Enrollment Form B DS150: SAS Transport File for Medical History Series: Dayton Child Enrollment Form B DS151: Medical History Series: Non-Dayton Child Enrollment Form B DS152: SAS Data Definition Statements for Medical History Series: Non-Dayton Child Enrollment Form B DS153: SAS Transport File for Medical History Series: Non-Dayton Child Enrollment Form B DS154: Medical History Series: Child Exit Form B DS155: SAS Data Definition Statements for Medical History Series: Child Exit Form B DS156: SAS Transport File for Medical History Series: Child Exit Form B DS157: Master Sample Series: Eligibility--Family Changes DS158: SAS Data Definition Statements for Master Sample Series: Eligibility--Family Changes DS159: SAS Transport File for Master Sample Series: Eligibility--Family Changes DS160: Master Sample Series: Full Demographic Sample DS161: SAS Data Definition Statements for Master Sample Series: Full Demographic Sample DS162: SAS Transport File for Master Sample Series: Full Demographic Sample DS163: Aggregated Claims: Fee-for-Service Annual Expenditures and Visits DS164: SAS Data Definition Statements for Aggregated Claims: Fee-for-Service Annual Expenditures and Visits DS165: SAS Transport File for Aggregated Claims: Fee-for-Service Annual Expenditures and Visits DS166: Aggregated Claims: Fee-for-Service Outpatient Visits DS167: SAS Data Definition Statements for Aggregated Claims: Fee-for-Service Outpatient Visits DS168: SAS Transport File for Aggregated Claims: Fee-for-Service Outpatient Visits DS169: Aggregated Claims: Fee-for-Service Inpatient Visits DS170: SAS Data Definition Statements for Aggregated Claims: Fee-for-Service Inpatient Visits DS171: SAS Transport File for Aggregated Claims: Fee-for-Service Inpatient Visits DS172: Aggregated Claims: Fee-for-Service Dental Visits DS173: SAS Data Definition Statements for Aggregated Claims: Fee-for-Service Dental Visits DS174: SAS Transport File for Aggregated Claims: Fee-for-Service Dental Visits DS175: Aggregated Claims: Fee-for-Service Individual Episodes DS176: SAS Data Definition Statements for Aggregated Claims: Fee-for-Service Individual Episodes DS177: SAS Transport File for Aggregated Claims: Fee-for-Service Individual Episodes DS178: Aggregated Claims: Fee-for-Service Annual Episodes DS179: SAS Data Definition Statements for Aggregated Claims: Fee-for-Service Annual Episodes DS180: SAS Transport File for Aggregated Claims: Fee-for-Service Annual Episodes DS181: Aggregated Claims: HMO and Seattle Fee-for-Service Outpatient Visits DS182: SAS Data Definition Statements for Aggregated Claims: HMO and Seattle Fee-for-Service Outpatient Visits DS183: SAS Transport File for Aggregated Claims: HMO and Seattle Fee-for-Service Outpatient Visits DS184: Aggregated Claims: HMO and Seattle Fee-for-Service Inpatient Visits DS185: SAS Data Definition Statements for Aggregated Claims: HMO and Seattle Fee-for-Service Inpatient Visits DS186: SAS Transport File for Aggregated Claims: HMO and Seattle Fee-for-Service Inpatient Visits DS187: Aggregated Claims: HMO and Seattle Fee-for-Service Annual Expenditure and Visit Counts DS188: SAS Data Definition Statements for Aggregated Claims: HMO and Seattle Fee-for-Service Annual Expenditure and Visit Counts DS189: SAS Transport File for Aggregated Claims: HMO and Seattle Fee-for-Service Annual Expenditure and Visit Counts DS190: Health Status and Attitude Series: Adult Data DS191: SAS Data Definition Statements for Health Status and Attitude Series: Adult Data DS192: SAS Transport File for Health Status and Attitude Series: Adult Data DS193: Health Status and Attitude Series: Child Data DS194: SAS Data Definition Statements for Health Status and Attitude Series: Child Data DS195: SAS Transport File for Health Status and Attitude Series: Child Data DS196: Insurance Preference Series: Maximum Dollar Expenditures DS197: SAS Data Definition Statements for Insurance Preference Series: Maximum Dollar Expenditures DS198: SAS Transport File for Insurance Preference Series: Maximum Dollar Expenditures DS199: Insurance Preference Series: Fixed Dollar Amount DS200: SAS Data Definition Statements for Insurance Preference Series: Fixed Dollar Amount DS201: SAS Transport File for Insurance Preference Series: Fixed Dollar Amount DS202: RAND Dictionary Documentation Files DS203: Aggregated Claims Series, Volume 1: Codebook for Fee-for-Service Annual Expenditures and Visit Counts DS204: Aggregated Claims Series, Volume 2: Codebook for Fee-for-Service Visits--Outpatient, Inpatient, and Dental DS205: Aggregated Claims Series, Volume 3: Codebook for Fee-for-Service Treatment Episodes and Annual Episode Counts DS206: Aggregated Claims Series, Volume 4: Codebook for Health Maintenance Organizations and Seattle Fee-for-Service Visits--Outpatient and Inpatient DS207: Aggregated Claims Series, Volume 5: Codebook for Health Maintenance Organizations and Seattle Fee-for-Service Annual Expenditures and Visit Counts DS208: Claims Line-Item Series, Volume 1: Codebook for Fee-for-Service Claims DS209: Claims Line-Item Series, Volume 2: Codebook for Health Maintenance Organization Claims DS210: Claims Line-Item Series, Volume 3: Codebook for Seattle Fee-for-Service Claims for Comparison with Health Maintenance Organization Claims DS211: HIE Reference Series, Volume 1: Codes Used in HIE Claims--Diagnoses, Symptoms, Procedures, Drugs, and Supplies, and Volume 2: Providers Cited in HIE Data DS212: Health Status and Attitude Series, Volume 1: Codebook for Adults and Children at Enrollment and Exit DS213: Health Status and Attitude Series, Volume 2: Appendices A-H and Glossary DS214: Insurance Preference Series: Codebook for Relation Between Expense Limit and Premium, and Dental Examinations: Codebook for Adults and Children at Enrollment and Exit DS215: Master Sample Series, Volume 1: Codebook for Eligibility--Family Changes File DS216: Master Sample Series, Volume 2: Codebook for Full Sample Demographic File DS217: Master Sample Series, Volume 3: Codebook for Supplemental Data File DS218: Medical Disorders Series, Volume 1: Codebook for Adults at Enrollment and Exit, Part 1 DS219: Medical Disorders Series, Volume 1: Codebook for Adults at Enrollment and Exit, Part 2 DS220: Medical Disorders Series, Volume 2: Codebook for Children at Enrollment and Exit DS221: Medical History Questionnaire Series, Volume 1: Codebook for Adults at Enrollment and Exit, Form A, Part 1 DS222: Medical History Questionnaire Series, Volume 1: Codebook for Adults at Enrollment and Exit, Form A, Part 2 DS223: Medical History Questionnaire Series, Volume 2: Codebook for Adults at Enrollment and Exit, Form B, Part 1 DS224: Medical History Questionnaire Series, Volume 2: Codebook for Adults at Enrollment and Exit, Form B, Part 2 DS225: Medical History Questionnaire Series, Volume 3: Codebook for Children at Enrollment and Exit DS226: Medical History Questionnaire Series, Volume 4: Codebook for Infants at Enrollment and Exit
description: Eligible individuals living in households in four metropolitan areas: Seattle, WA, Dayton, OH, Charleston, SC, and Fitchburg-Leominster, MA, and in two rural counties: Franklin County, MA, and Georgetown County, SC. Eligibility criteria excluded those who were eligible for Medicare or who would become eligible during the experiment, those with family incomes over $25,000 (1973 dollars), those who were institutionalized (jail, long-term hospital), and those in the military and their dependents, along with veterans with service-connected disabilities.
description: Due to the way missing data were coded, setup files were created to read all variables as alphanumeric only. To determine which variables need to be converted to either integer "I" or fixed-decimal "F", please refer to the appropriate documentation in Part 202, All RAND Dictionary Documentation Files.The data files within some of the series names are not consecutively numbered.Part 202, RAND Dictionary Documentation Files, is an ASCII text file and Parts 203-226 are codebooks provided as Portable Document Format (PDF) files. The PDF file format was developed by Adobe Systems Incorporated and can be accessed using PDF reader software, such as the Adobe Acrobat Reader. Information on how to obtain a copy of the Acrobat Reader is provided through the ICPSR Website on the Internet.