DOI: 10.3886/icpsr03315.v1
title: Survey of Program Dynamics (SPD) First Longitudinal File: Data Years 1992, 1993, 1994, 1996, and 1997
title: Version 1

description: The Survey of Program Dynamics (SPD) First Longitudinal
 File is a fully edited file that provides socioeconomic data for the
 calendar years 1992, 1993, 1994, 1996, and 1997. It is intended for
 longitudinal analyses of the effects of welfare reform on individuals,
 families, and households. The file can be linked to the SPD 1998
 (ICPSR 2917), the SPD 1997 Bridge (ICPSR 2797), and the SIPP panel
 files for 1992 (ICPSR 6429) and 1993 (ICPSR 6886). The file contains
 basic demographic, economic, and social characteristics data for each
 member of the household for four or five years depending on the
 panel. The 1992 panel contains data for 1992, 1993, 1994, 1996, and
 1997. The 1993 panel contains data for 1993, 1994, 1996, and 1997. The
 subject matter is described as follows: demographic data (age, sex,
 race, 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), 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, the 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. However, the sample is not
 designed to produce state estimates. 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.
description: The SURVEY OF PROGRAM DYNAMICS (SPD), 1997: BRIDGE SURVEY
 (ICPSR 2797) interviewed approximately 29,619 households from retired
 1992 and 1993 Survey of 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 SURVEY OF PROGRAM
 DYNAMICS (SPD), 1998 PUBLIC USE FILE (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 left the universe before the 1998 interview.
description: The database dictionary is provided as an ASCII text
 file, and the codebooks are provided by the data producer 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 on the ICPSR Web
site.