DOI: 10.3886/icpsr03594.v1
title: Survey of Program Dynamics (SPD) Second Longitudinal File: Data Years 1992, 1993, 1994, 1996, 1997, 1998, and 1999
title: Version 1

description: The Survey of Program Dynamics (SPD) Second Longitudinal
 File is a fully edited file that provides socioeconomic data for the
 calendar years 1992-1999, except 1995. It is intended for longitudinal
 analyses of effects of welfare reform on individuals, families, and
 households. The file can be linked to the Survey of Program Dynamics
 (SPD) First Longitudinal File (ICPSR 3315), SPD 1997 Bridge (ICPSR
 2797), SPD 1998 (ICPSR 2917), and the SIPP panel files for 1992 (ICPSR
 6429) and 1993 (ICPSR 6886). The subject matter is described as
 follows: demographic data (age, sex, ethnic origin, marital status,
 household relationship, education, and veteran status), economic data
 (work experience, employment status, occupation, industry, weeks
 worked and hours per week worked, total income, and income components
 for people 15 years and older), income data (income from jobs, net
 income from business, farm or rent, pensions, dividends, interest, and
 Social Security payments), and data covering noncash income sources
 (food stamps, school lunch program, employer-provided group health
 insurance plan, employer-provided pension plans, Medicaid, Medicare,
 CHAMPUS or military health care, and energy assistance). The file
 contains codes for 41 individual states, plus the District of
 Columbia. The SPD sample in the nine remaining states is identified in
 three groups for confidentiality reasons. The three groups are as
 follows: Maine and Vermont, Iowa, North Dakota, and South Dakota, and
 Alaska, Idaho, Montana, and Wyoming. The sample is not designed to
produce state estimates.
description: The Survey of Program Dynamics (SPD), 1997: Bridge Survey
 (ICPSR 2797) interviewed approximately 29,619 households from retired
 1992 and 1993 Survey in Income and Program Participation (SIPP)
 panels, which were scientifically selected on the basis of area of
 residence to represent the nation as a whole. For the SPD 1998 (ICPSR
 2917), from the households interviewed in 1997, a subsample of 19,129
 households was selected for the continuing sample. Low-income
 households and households with children were selected with certainty
 or near certainty. Middle- and high-income households without children
had a 1-in-4 chance of being selected for the sample.
description: Datasets: 
DS0: Study-Level Files
DS1: Data File
DS2: Codebook Volume I
DS3: Codebook Volume II
DS4: Codebook Volume III
DS5: Codebook Volume IV
DS6: Codebook Volume V
description: The universe consists of people who resided in the United
 States, except people living in institutions, such as prisons and
 nursing homes or entire military households, in March 1992 and/or
 March 1993. The universe is represented by original sample persons
 from the 1992 and 1993 Survey of Income and Program Participation
 (SIPP) panels, except those who were subsampled out because of cost
constraints or leaving the universe before the 1998 interview.
description: The database dictionary is provided as an ASCII text
 file, and the codebook, which is now available in five volumes, was
 provided by the data producer as a Portable Document Format (PDF)
 file. 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 on the ICPSR Web site.