DOI: 10.6077/j5/gsq69f
title: Survey of Program Dynamics Longitudinal File, 1992-1998

description: &lt;p&gt;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. Note: Because of sample attrition, the SPD data in any one year should not be considered a nationally representative survey of the population and may not be comparable with other data sources.&lt;/p&gt;
description: Survey of Program Dynamics
description: collection_notes: This SPD file covers a variety of subject areas which may be differentially affected by the mode of collection. For example, more frequent interviews (and the collection of contemporaneous data) may result in more reports of part time work, one-time Income sources, or part-year health insurance coverage. Be aware that observed changes over time may be the result of the different modes of collection over the lifetime of this survey.

The 1992 and 1993 SiPP Panels (CY1992- CY1994 data) collected data using a paper questionnaire. The data was collected three times per year and used a four-month recall. The 1992 and 1993 SIPP data was converted to
a calendar year format to resemble the CPS March data. Users of the 1992 through 1994 data need to review Appendix D, "SIPP to CPS Cross-Reference Map," to understand the conversion of SIPP variables to CPS
variables.

The 1997 SPD collected data used a slightly modified 1997 CPS March automated instrument. The data was collected between May and June 1997 and used a "last year" (1996) recall for most questions.

The 1998 SPD collected data used an automated instrument specifically designed for the SPD. The data were collected between May and June 1998 and used a "last year" (1997) recall for most questions.