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SIPP Public Use Microdata Files

Following data collection as described in Chapter 2 of the SIPP Users' Guide and postcollection processing as described in Chapter 4 of the SIPP Users' Guide, the Census Bureau prepares data files in formats compatible with the most common methods of analysis. Those microdata are available in several file formats and can be obtained on a variety of media. The following sections describe the file formats currently in use, each of which is used for somewhat different SIPP data. Information is also provided about how to obtain those data and supporting documentation.

Table 5-1. Publications in the P-70 Series

Publication Number Title
P70-1 Economic Characteristics of Households in the U.S. Third Quarter 1983
P70-2 Economic Characteristics of Households in the U.S. Fourth Quarter, 1983
P70-3 Economic Characteristics of Households in the U.S. First Quarter, 1984
P70-4 Economic Characteristics of Households in the U.S. Second Quarter, 1984
P70-5 Economic Characteristics of Households in the U.S. Third Quarter, 1984
P70-6 Economic Characteristics of Households in the U.S. Fourth Quarter, 1984
P70-7 Household Wealth and Asset Ownership, 1984
P70-8 Disability, Functional Limitations, and Health Insurance Coverage: 1984-1985
P70-9 Who's Minding the Kids? Child Care Arrangements: Winter 1984-1985
P70-10 Male-Female Differences in Work Experience, Occupation, and Earnings: 1984
P70-11 What's It Worth? Educational Background and Economic Status: Spring 1984
P70-12 Pensions: Workers Coverage and Retirement Income, 1984
P70-13 Who's Helping Out? Support Network Among American Families
P70-14 Characteristics of Persons Receiving Benefits from Major Assistance Programs
P70-15-RD-1 Transitions in Income and Poverty Status: 1984-1985
P70-16-RD-2 Spells of Job Search and Layoff...and Their Outcomes
P70-17 Health Insurance Coverage, 1986-1988
P70-18 Transitions in Income and Poverty Status: 1985-1986
P70-19 The Need for Personal Assistance with Everyday Activities: Recipients and Caregivers
P70-20 Who's Minding the Kids? Child Care Arrangements: Winter 1986-1987
P70-21 What's It Worth? Educational Background and Economic Status: Spring 1987
P70-22 Household Wealth and Asset Ownership: 1988
P70-23 Family Disruption and Economic Hardship: The Short-Run Picture for Children
P70-24 Transitions in Income and Poverty Status: 1987-1988
P70-25 Pensions: Worker Coverage and Retirement Benefits, 1987
P70-26 Extended Measures of Well-Being: 1984
P70-27 Job Creation During Late 1980's: Dynamic Aspects of Employment Growth
P70-28 Who's Helping Out? Support Network Among American Families
P70-29 Health Insurance Coverage: 1987 to 1990
P70-30 Who's Minding the Kids? Child Care Arrangements: Fall 1988
P70-31 Characteristics of Recipients and the Dynamics of Program Participation: 1987-1988
P70-32 What's It Worth? Educational Background and Economic Status: Spring 1990
P70-33 Americans with Disabilities: 1991-1992
P70-34 Household Wealth and Asset Ownership: 1991
P70-35 Monitoring the Economic Health of American Households: Average Monthly Estimates of Income, Labor Force Activity, Program Participation and Health Insurance, First Quarter 1984 to Third Quarter 1991
P70-36 Who's Minding the Kids? Child Care Arrangements: Fall 1991
P70-37 Dynamics of Economic Well-Being: Health Insurance, 1990-1992
P70-38 The Diverse Living Arrangements of Children: Summer 1991
P70-39 Dollars for Scholars: Postsecondary Costs and Financing, 1990-1991
P70-40 Dynamics of Economic Well-Being: Labor Force and Income: 1990-1992
P70-41 Dynamics of Economic Well-Being: Program Participation: 1990-1992
P70-42 Dynamics of Economic Well-Being: Poverty: 1990
P70-43 Dynamics of Economic Well-Being: Health Insurance: 1991-1993
P70-44 The Effect of Health Insurance Coverage on Doctor and Hospital Visits: 1990-1992
P70-45 Dynamics of Economic Well-Being: Poverty: 1991-1993
P70-46 Dynamics of Economic Well-Being: Program Participation: 1991-1993
P70-47 Asset Ownership of Households: 1993
P70-48 Dynamics of Economic Well-Being: Labor Force: 1991-1993
P70-49 Dynamics of Economic Well-Being: Income: 1991-1992
P70-50 Beyond Poverty, Extended Measures of Well-Being: 1992
P70-51 What's It Worth? Field of Training and Economic Status: 1993
P70-52 What Does it Cost to Mind Our Preschoolers?
P70-53 Who's Minding Our Preschoolers?
P70-54 Who Loses Coverage and for How Long?
P70-55 Dynamics of Economic Well-Being: Poverty: 1992-1993, Who Stays Poor? Who Doesn't?
P70-56 Dynamics of Economic Well-Being: Income, 1992-1993, Moving Up and Down the Income Ladder
P70-57 Dynamics of Economic Well-Being: Labor Force, 1992-1993—A Perspective on Low-Wage Workers
P70-58 Dynamics of Economic Well-Being: Program Participation, 1992-1993—Who Gets Assistance?
P70-59 My Daddy Takes Care of Me! Fathers as Care Providers
P70-60 Financing the Future: Postsecondary Students, Costs, and Financial Aid
P70-61 Americans with Disabilities: 1994-95
P70-62 Who's Minding Our Preschoolers — Fall 1994 Update
P70-63 Dynamics of Economic Well Being: Poverty, 1993-94
P70-64 Who Loses Coverage, and For How Long?
P70-65 Moving Up and Down the Income Ladder
P70-66 Seasonality of Moves and Duration of Residence
P70-67Extended Measures of Well-Being: Meeting Basic Needs
P70-68A Child’s Day: Home, School, and Play (Selected Indicators of Child Well-Being) (P70-68)
P70-69Dynamics of Economic Well-Being: Program Participation, Who Gets Assistance?
P70-70Who’s Minding the Kids? Child Care Arrangements
P70-71 Household Net Worth and Asset Ownership, 1995
P70-72What’s It Worth? Field of Training and Economic Status
P70-73Americans With Disabilities: 1997 (P70-73)
P70-74Living Arrangements of Children: Fall 1996 (P70-74)
P70-75Did You Know? Homes Account for 44 Percent of All Wealth (P70-75)
P70-76Reasons People Do Not Work, 1996 (P70-76)
P70-77Dynamics of Economic Well-Being: Program Participation, Who Gets Assistance? 1993 to 1995 (P70-77)
P70-78Home-Based Workers in the United States: 1997 (P70-78)
P70-79Maternity Leave and Employment Patterns: 1961-1995 (P70-79)
P70-80Number, Timing, and Duration of Marriages and Divorces: 1996 (P70-80)
P70-82Fertility and Program Participation in the United States: 1996 (P70-82)
P70-84WHO'S HELPING OUT? Financial Support Networks Among American Households: 1997 (P70-84)
P70-85Work and Work-Related Activities of Mothers Receiving Temporary Assistance to Needy Families: 1996, 1998, and 2000 (P70-85)
P70-86Who’s Minding the Kids? Child Care Arrangements: Spring 1997


Formats and Contents of SIPP Microdata Files

SIPP public use microdata are available in four types of files: core wave files, topical module files, and full and partial panel files. The files vary in content and structure. Analysts should be aware that their need for files depends on their particular application.

Data files are available through the Customer Services Branch, Administrative and Customer Services Division, at (301) 457-4100. Users can also extract data files by using on-line data access tools, as described in "Sources for Obtaining SIPP Microdata."

Core Wave Files

Core wave files contain the core labor force, income, household and family composition, and program participation data from one wave of interviews. The core wave files are currently available in person-month format, containing, for every person who was a member of a SIPP household for at least 1 month during the 4-month reference period for that wave, one record for each month that person was in-sample.1 In other words, a person who was in-sample for all 4 reference months has four records.one for each reference month. A person who was in-sample for only 1 month would have just one record. The core wave files were designed to be used for cross-sectional analyses. Analysts who do not wish to wait for the release of certain files can link one or more core wave files to make their own longitudinal files. Chapter 13 of the SIPP Users' Guide discusses linking files. Table 5-2 illustrates the structure of the person-month format for core wave files. The core wave files are the only source of monthly cross-sectional weights. When using data drawn from the full panel files for cross-sectional analyses, users must merge weights from the core wave files. Chapter 8 of the SIPP Users' Guide explains how to select and merge weights.

Topical Module Files

Each topical module file contains selected core information along with the data from the topical module administered in a given wave. As described in Chapter 2 of the SIPP Users' Guide, different topical modules are administered in each wave of a SIPP panel. Table 5-3 shows which topical modules were administered for each wave of each SIPP panel. Table 5-4 lists topical areas along with the panels and waves in which they were administered. Topical module files are issued in person- record format; there is one record for each person who was a member of a SIPP household at the time of the interview for that wave. Table 5-5 illustrates the structure of a topical module file. For the topical modules, there are people for whom there is no topical information. Chapter 2 of the SIPP Users' Guide describes how the interviews are conducted and how topical module information is collected; Chapter 4 of the SIPP Users' Guide explains how missing data are handled in the files. In the 1996 Panel, the month that determines the universe for the topical module files changed to month 4.

Table 5-2. Structure of the Person-Month Format Core Wave Files

SUIDa Person Month Household Vars Family Vars Subfamily Vars Sample Status Other Person Vars
1 1 1    Yes 
  2    Yes 
  3    Yes 
  4    Yes 
 2 1    Yes 
  2    Yes 
  3 Missing Missing Missing No Missing
  4 Missing Missing Missing No Missing
 3 1    Yes 
  2    Yes 
  3 Missing Missing Missing No Missing
  4    Yes 
2 1 1    Yes 
  2    Yes 
  3    Yes 
  4    Yes 
 2 1 Missing Missing Missing No Missing
  2    Yes 
  3    Yes 
  4    Yes 
3 1 1    Yes 
  2    Yes 
  3    Yes 
  4    Yes 
 2 1    Yes 
  2    Yes 
  3 Missing Missing Missing No Missing
  4 Missing Missing Missing No Missing
4 1 1    Yes 
  2    Yes 
  3    Yes 
  4    Yes 

aSample unit ID number. Chapter 4 of the SIPP Users' Guide provides more information about identification numbers in SIPP.

Table 5-3. Topical Modules, by Panel and Wave

Wave Subject Areas
1996 Panel
1 Recipiency History, Employment History
2 Work Disability History, Education and Training History, Marital History, Migration History, Fertility History, Household Relationships
3 Assets, Liabilities, and Eligibility; Medical Expenses/Utilization of Health Care—Adults; Medical Expenses/Utilization of Health Care—Children; Work-Related Expenses; Child Support Paid
4 Annual Income and Retirement Accounts, Taxes, Work Schedule, Child Care, Disability Questions
5 School Enrollment and Financing, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability—Adults, Functional Limitations and Disability—Children, Employer-Provided Health Benefits
6 Children's Well-Being, Assets, Liabilities, and Eligibility, Medical Expenses/Utilization of Health Care. Adults, Medical Expenses/Utilization of Health Care—Children, Work-Related Expenses, Child Support Paid
7 Annual Income and Retirement Account, Taxes, Retirement and Pension Plan Coverage; Home Health Care
8 Adult Well-Being, Welfare Reform
9 Assets, Liabilities, and Eligibility; Medical Expenses/Utilization of Health Care—Adults; Medical Expenses/Utilization of Health Care—Children; Work-Related Expenses; Child Support Paid
10 Annual Income and Retirement Accounts, Taxes, Work Schedule, Child Care
11 Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability—Adults, Functional Limitations and Disability—Children
12 Assets, Liabilities, and Eligibility; Medical Expenses/Utilization of Health Care—Adults; Medical Expenses/Utilization of Health Care—Children; Work-Related Expenses; Child Support Paid; Children's Well-Being
1993 Panel
1 Recipiency History, Employment History
2 Work Disability History, Education and Training History, Marital History, Migration History, Fertility History, Household Relationships
3 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability, Utilization of Health Care Services
4 Selected Financial Assets; Medical Expenses and Work Disability; Real Estate, Shelter Costs, Dependent Care, and Vehicles
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability—Adults, Utilization of Health Care Services—Adults, Functional Limitations and Disability—Children, Utilization of Health Care Services—Children, Children's Well-Being
7 Assets and Liabilities; Real Estate, Shelter Costs, Dependent Care, and Vehicles; Medical Expenses and Work Disability
8 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
9 Retirement Expectations and Pension Plan Coverage, Child Support Agreements, Child Care, Support for Nonhousehold Members, Work Schedule, Children's Well-Being, Basic Needs
1992 Panel
1 Recipiency History, Employment History
2 Work Disability History, Education and Training History, Marital History, Migration History, Fertility History, Household Relationships
3 Extended Measures of Well-Being (Consumer Durables, Living Conditions, Basic Needs)
4 Assets and Liabilities, Retirement Expectations and Pension Plan Coverage, Real Estate Property and Vehicles
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability, Utilization of Health Care Services
7 Selected Financial Assets; Medical Expenses and Work Disability; Real Estate, Shelter Costs, Dependent Care, and Vehicles
8 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
9 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability—Adults, Utilization of Health Care Services—Adults, Functional Limitations and Disability—Children, Utilization of Health Care Services.Children, Children's Well-Being
10 No Topical Modules
1991 Panel
1 No Topical Modules
2 Recipiency History, Employment History, Work Disability History, Education and Training History, Marital History, Migration History, Fertility History, Household Relationships
3 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability, Utilization of Health Care Services
4 Selected Financial Assets; Medical Expenses and Work Disability; Real Estate, Shelter Costs, Dependent Care, and Vehicles
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Extended Measures of Well-Being (Consumer Durables, Living Conditions, Basic Needs)
7 Assets and Liabilities, Retirement Expectations and Pension Plan Coverage, Real Estate Property and Vehicles
8 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
1990 Panel
1 No Topical Modules
2 Recipiency History, Employment History, Work Disability History, Education and Training History, Marital History, Migration History, Fertility History, Household Relationships
3 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability, Utilization of Health Care Services
4 Assets and Liabilities, Retirement Expectations and Pension Plan Coverage, Real Estate Property and Vehicles
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Time Spent Outside Work Force, Child Support Agreements, Support for Nonhousehold Members, Functional Limitations and Disability, Utilization of Health Care Services
7 Selected Financial Assets; Medical Expenses and Work Disability; Real Estate, Shelter Costs, Dependent Care, and Vehicles
8 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
1989 Panel
1 No Topical Modules
2 Recipiency History, Employment History, Work Disability History, Education and Training History, Marital History, Migration History, Fertility History, Household Relationships
3 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Home Health Care, Disability Status and Utilization of Health Care Services, Functional Activities
4 The 1989 Panel was terminated following Wave 3.
1988 Panel
1 No Topical Modules
2 Recipiency History, Employment History, Work Disability History, Education and Training History, Family Background, Marital History, Migration History, Fertility History, Household Relationships
3 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Long-Term Care, Disability Status of Children, Health Status and Utilization of Health Care Services
4 Selected Financial Assets; Medical Expenses and Work Disability; Real Estate, Shelter Costs, Dependent Care, and Vehicles
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Home Health Care, Disability Status of Children, Health Status and Utilization of Health Care Services, Functional Activities
7 No Wave 7
8 No Wave 8
1987 Panel
1 No Topical Modules
2 Recipiency History, Employment History, Work Disability History, Education and Training History, Family Background, Marital History, Migration History, Fertility History, Household Relationships
3 Child Care Arrangements/Child Support Agreements, Support for Nonhousehold Members, Work-Related Expenses, Shelter Costs/Energy Usage
4 Assets and Liabilities, Real Estate Properties and Vehicles
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Work Schedule, Child Care, Child Support Agreements, Support for Nonhousehold Members, Long-Term Care, Disability Status of Children, Health Status and Utilization of Health Care Services
7 Selected Financial Assets; Medical Expenses and Work Disability; Real Estate, Shelter Costs, Dependent Care, and Vehicles
8 No Wave 8
1986 Panel
1 No Topical Modules
2 Recipiency History, Employment History, Work Disability History, Education and Training History, Family Background, Marital History, Migration History, Fertility History, Household Relationships
3 Child Care Arrangements/Child Support Agreements, Support for Nonhousehold Members, Job Offers, Health Status and Utilization of Health Care Services, Long-Term Care, Disability Status of Children
4 Assets and Liabilities, Retirement Expectations and Pension Plan Coverage, Real Estate Property and Vehicles
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Child Care Arrangements/Child Support Agreements, Support for Nonhousehold Members, Work-Related Expenses, Shelter Costs/Energy Usage
7 Assets and Liabilities, Pension Plan Coverage, Real Estate Property and Vehicles
8 No Wave 8
1985 Panel
1 No Topical Modules
2 No Topical Modules
3 Assets and Liabilities, Real Estate Property and Vehicles
4 Support for Nonhousehold Members/Work-Related Expenses, Marital History, Migration History, Fertility History, Household Relationships
5 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
6 Child Care Arrangements/Child Support Agreements, Support for Nonhousehold Members, Job Offers, Health Status and Utilization of Health Care Services, Long-Term Care, Disability Status of Children
7 Assets and Liabilities, Retirement Expectations and Pension Plan Coverage, Real Estate Property and Vehicles
8 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing
1984 Panel
1 No Topical Modules
2 No Topical Modules
3 Education and Work History, Health and Disability
4 Assets and Liabilities; Retirement and Pension Coverage; Housing Costs, Conditions, and Energy Usage
5 Child Care, Welfare History and Child Support, Reasons for Not Working/Reservation Wage, Support for Nonhousehold Members/Work-Related Expenses
6 Earnings and Benefits, Property Income and Taxes, Education and Training
7 Assets and Liabilities, Pension Plan Coverage, Real Estate Property and Vehicles
8 Support for Nonhousehold Members/Work-Related Expenses, Marital History, Migration History, Fertility History, Household Relationships
9 Annual Income and Retirement Accounts, Taxes, School Enrollment and Financing

Table 5-4. Topical Modules, by Subject

Subject Areas Panel and Wavea
Marital History 84-8, 85-4, 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-2, 93-2, 96-2
Fertility History 84-8, 85-4, 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-2, 93-2, 96-2
Household Relationships 84-8, 85-4, 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-2, 93-2, 96-2
Migration History 84-8, 85-4, 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-2, 93-2, 96-2
Family Background 86-2, 87-2, 88-2
Annual Income and Retirement Accounts 84-9, 85-5, 85-8, 86-5, 87-5, 88-5, 90-5, 90-8, 91-5, 91-8, 92-5, 92-8, 93-5, 93-8, 96-4, 96-7, 96-10
Taxes 84-9, 85-5, 85-8, 86-5, 87-5, 88-5, 90-5, 90-8, 91-5, 91-8, 92-5, 92-8, 93-5, 93-8, 96-4, 96-7, 96-10
Assets and Liabilities 84-4, 84-7, 85-3, 85-7, 86-4, 86-7, 87-4, 90-4, 91-7, 92-4, 93-7, 96-3, 96-6, 96-9, 96-12
Selected Financial Assets 87-7, 88-4, 90-7, 91-4, 92-7, 93-4
Retirement Expectations and Pension Plan Coverage 84-4, 85-7, 86-4, 86-7, 87-4, 90-4, 91-7, 92-4, 93-9, 96-7
Pension Plan Coverage 84-7, 86-8
Earnings and Benefits 84-6
Recipiency History 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-1, 93-1, 96-1
Child Support Agreements 85-6, 86-3, 86-6, 87-3, 87-6, 88-3, 88-6, 89-3, 90-3, 90-6, 91-3, 92-6, 92-9, 93-3, 93-6, 93-9, 96-5, 96-11
Child Support Paid 96-3, 96-6, 96-9, 96-12
Child Care 84-5, 85-6, 86-3, 86-6, 87-3, 87-6, 88-3, 88-6, 89-3, 90-3, 90-6, 91-3, 92-6, 92-9, 93-3, 93-6, 93-9, 96-4, 96-10
Support for Nonhousehold Members 84-3, 84-5, 84-8, 85-4, 85-6, 86-3, 86-6, 87-3, 87-6, 88-3, 88-6, 90-3, 90-6, 91-3, 92-6, 92-9, 93-3, 93-6, 93-9, 96-5
Welfare History and Child Support 84-5
Real Estate Property and Vehicles 84-7, 85-3, 85-7, 86-4, 86-7, 87-4, 90-4, 91-7, 92-4, 93-7
Real Estate, Shelter Costs, Dependent Care, and Vehicles 87-7, 88-4, 90-7, 91-4, 92-7, 93-4, 93-7
Shelter Costs/Energy Usage 86-6, 87-3
Property Income and Taxes 84-6
Housing Costs, Conditions, and Energy Usage 84-4
Employment History 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-1, 93-1, 96-1
Work—Disability History 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-2, 93-2, 96-2
Work Schedule 87-6, 88-3, 88-6, 89-3, 90-3, 91-3, 92-6, 92-9, 93-3, 93-6, 93-9, 96-4, 96-10
Work-Related Expenses 84-5, 84-8, 85-4, 86-6, 87-3, 96-3, 96-6, 96-9, 96-12
Reasons for not Working/Reservation Wage 84-5
Time Spent Outside Work Force 90-6
Job Offers 85-6, 86-3
Home-Based Self-Employment/Size of Firm 92-6, 93-3
Education and Training History 86-2, 87-2, 88-2, 89-2, 90-2, 91-2, 92-2, 93-2, 96-2
Education and Work History 84-3
School Enrollment and Financing 84-9, 85-5, 85-8, 86-5, 87-5, 88-5, 90-5, 90-8, 91-5, 91-8, 92-5, 92-8, 93-5, 93-8, 96-5
Education and Training 84-6
Functional Limitations and Disability 90-3, 90-6, 91-3, 92-6, 93-3
Functional Limitations and Disability—Adults 92-9, 93-6, 96-5, 96-11
Functional Limitations and Disability—Children 92-9, 93-6, 96-5, 96-11
Disability Status of Children 85-6, 86-3, 87-6, 88-3, 88-6, 89-3
Functional Activities 88-6, 89-3
Medical Expenses and Work Disability 87-7, 88-4, 90-7, 91-4, 92-7, 93-4, 93-7
Utilization of Health Care Services 90-3, 90-6, 91-3, 92-6, 93-3
Utilization of Health Care Service—Adults 92-9, 93-6, 96-5, 96-12
Utilization of Health Care Services—Children 92-9, 93-6, 96-5, 96-12
Health Status and Utilization of Health Care Services 85-6, 86-3, 87-6, 88-3, 88-6, 89-3
Long-Term Care 85-6, 86-3, 87-6, 88-3
Home Health Care 88-6, 89-3
Health and Disability 84-3
Employer-Provided Health Benefits 96-5
Disability Questions 96-4
Extended Measure of Well-Being (Consumer
Durables, Living Conditions, Basic Needs)		 91-6, 92-3
Adult Well-Being 96-8
Basic Needs 93-9
Welfare Reform 96-8
Children's Well-Being 92-9, 93-6, 93-9, 96-6, 96-11, 96-12

a The number preceding the hyphen indicates the year of the panel, and the number following the hyphen indicates the wave number. Thus, 84-8 denotes that the information was collected in the 1984 Panel, during Wave 8.



Table 5-5. Structure of Topical Module Microdata File

SUIDa Person Interview Status
in Interview Month		 Core Vars Topical Module
Vars
1 1 Yes   
 2 Yes  
 3 No Missing Missing
 4 Yes  
 5 No Missing Missing
2 1 Yes  
 2 Yes  
3 1 Yes  
4 1 Yes  
 2 No Missing Missing
 3 Yes  
5 1 Yes  
 2 Yes  
 3 Yes  

a Sample unit ID number. Chapter 4 in the SIPP Users' Guide provides more information about identification numbers in SIPP.

Full and Partial Panel Files

At the conclusion of each panel, the Census Bureau creates a single full panel file containing all data from the core wave files for every person who was a member of the SIPP sample at any time during the life of that panel.2 To date, the full panel files have been issued in a format that contains one record for each person. That record contains either data or missing value codes for most core questionnaire items for every month of the panel.3 Chapter 3 of the SIPP Users' Guide discusses survey content, including information about the content of the core questionnaire. At the time that this Guide was written, full panel files had been issued for all SIPP panels prior to the 1996 Panel. Because of the extended (4-year) duration of the 1996 Panel, the Census Bureau is modifying its procedures for releasing information for the full panel.

__________
1 Prior to the 1990 Panel, the Census Bureau issued core wave files in a format with a single record for each person. Those files are described in earlier editions of the SIPP Users' Guide.
2 Because of the volume of data collected in the 1996 Panel, that procedure may not occur for the 1996 full panel file.
3 In the case of items that are asked only once per interview rather than for each month of the 4-month reference period, there is a field for each interview rather than for each month.

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