DOI: 10.3886/icpsr34921.v1
title: National Social Life, Health, and Aging Project (NSHAP): Wave 2 and Partner Data Collection, [United States], 2010-2011
title: NSHAP Wave 2
title: Version 1

description: The National Social Life, Health and Aging Project (NSHAP) is the first population-based study of health and social factors on a national scale, aiming to understand the well-being of older, community-dwelling Americans by examining the interactions among physical health, illness, medication use, cognitive function, emotional health, sensory function, health behaviors, and social connectedness. It is designed to provide health providers, policy makers, and individuals with useful information and insights into these factors, particularly on social and intimate relationships.
The National Opinion Research Center (NORC), along with Principal Investigators at the University of Chicago, conducted more than 3,000 interviews during 2005 and 2006 with a nationally representative sample of adults aged 57 to 85. Face-to-face interviews and biomeasure collection took place in respondents' homes. Wave 2 interviews were conducted from August 2010 through May 2011, during which Wave 1 Respondents were re-interviewed. An attempt was also made to interview individuals who were sampled in Wave 1 but declined to participate. In addition, spouses or co-resident partners were also interviewed using the same instruments as the main respondents. This process resulted in 3,377 total respondents. The following files constitute Wave 2: Core Data, Disposition of Wave 1 Partner Data, Social Networks Data, Social Networks Update Data, Partner History Data, Partner History Update Data, Medications Data, Proxy Data, and Sleep Statistics Data.
Included in the Core files (Datasets 1 and 2) are demographic characteristics, such as gender, age, education, race, and ethnicity. Other topics covered respondents' social networks, social and cultural activity, physical and mental health including cognition, well-being, illness, history of sexual and intimate partnerships, and patient-physician communication, in addition to bereavement items. Data were also collected from respondents on the following items and modules:  social activity items, physical contact module, sexual interest module, get up and go assessment of physical function, and a panel of biomeasures, including weight, waist circumference, height, blood pressure, smell, saliva collection, and taste.
The Disposition of Wave 1 Partner files (Datasets 3 and 4) detail information derived from Section 6A items regarding the partner from Wave 1 within the questionnaire. This provides a complete history for respondent partners across both waves.
The Social Networks files (Datasets 5 and 6) contain one record for each person identified on the network roster. Respondents who refused to participate in the roster or who did not identify anyone are not represented in this file.
The Social Networks Update files (Datasets 7 and 8) detail respondents' current relationship status with each person identified on the network roster.
The Partner History file (Dataset 9) contains one record for each marriage, cohabitation, or romantic relationship identified in Section 6A of the questionnaire, including a current partner in Wave 2 but excluding the partner from Wave 1.
The Partner History Update file (Dataset 10) details respondents' current sexual partner information, as well as marital and cohabiting status.
The Medications Data file (Dataset 11) contains records for items listed in the medications log.
The Proxy Data files (Datasets 12 and 13) contain information from proxy interviews administered for Wave 1 Respondents who were either deceased or whose health was too poor to participate in Wave 2.
The Sleep Statistics Data files (Dataset 14 and 15) provide information on actigraphy sleep variables.
description: In Wave 2, the instrument was simplified to facilitate both administration and analysis. Particularly, all questions were asked entirely in the in-person interview or the leave-behind questionnaire, as was not the case for the previous Wave 1 study design. In addition, partner history items regarding relationship details and sexual experience were combined into the same modules. As in Wave 1, selected biomeasures were administered to a randomized subset of respondents in cases where this provided adequate power for likely analyses. Users may refer to ICPSR 20541, National Social Life, Health, and Aging Project (NSHAP): Wave 1 for further study design information, as well as the P.I. Documentation and visit the NORC at the University of Chicago Web site.
description: ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of
					disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major
					statistical software formats as well as standard codebooks to accompany the data. In addition to
					these procedures, ICPSR performed the following processing steps for this data collection:
					Standardized missing values.; Checked for undocumented or out-of-range codes..
description: Response Rates:
					The overall unconditional response rate for the Wave 2 panel was 74 percent; the conditional response rate of Wave 1 respondents was 89 percent; the conditional response rate of partners was 84 percent; and the conversion rate for Wave 1 nonrespondents was 26 percent. For additional information on response rates, please refer to the NORC at the University of Chicago web site.
description: Datasets:
					
						DS0: Study-Level Files
						DS1: Core Data, Public-Use
						DS2: Core Data, Restricted-Use
						DS3: Disposition of Wave 1 Partner Data, Public-Use
						DS4: Disposition of Wave 1 Partner Data, Restricted-Use
						DS5: Social Networks Data, Public-Use
						DS6: Social Networks Data, Restricted-Use
						DS7: Social Networks Update Data, Public-Use
						DS8: Social Networks Update Data, Restricted-Use
						DS9: Partner History Data, Restricted-Use
						DS10: Partner History Update Data, Restricted-Use
						DS11: Medications Data, Restricted-Use
						DS12: Proxy Data, Public-Use
						DS13: Proxy Data, Restricted-Use
						DS14: Sleep Statistics Data, Public-Use
						DS15: Sleep Statistics Data, Restricted-Use
						DS16: Original NSHAP Wave 2 Stata Public-Use Data Files
						DS17: Original NSHAP Wave 2 Stata Restricted-Use Data Files
description: National Social Life, Health, and Aging Project (NSHAP)
description: computer-assisted personal interview (CAPI)
description: computer-assisted telephone interview (CATI)
description: coded on-site observation
description: face-to-face interview
description: mixed mode
description: self-enumerated questionnaire
description: telephone interview
description: Community-dwelling individuals ages 57-85, Wave 1 Respondents, and eligible non-interviewed respondents from Wave 1 (Wave 1 Non-Interviewed Respondents). Cohabiting spouses and romantic partners of Wave 1 Respondents and Wave 1 Non-Interviewed Respondents living within the household, age 18 years or older.
description: In Wave 2, NSHAP returned to Wave 1 Respondents and eligible non-interviewed respondents from Wave 1 (Wave 1 Non-Interviewed Respondents). The Wave 2 sample was also extended to include the cohabiting spouses and romantic partners of Wave 1 Respondents and Wave 1 Non-Interviewed Respondents. Partners were considered to be eligible to participate in NSHAP if they resided in the household with Wave 1 Respondent/Wave 1 Non-Interviewed Respondent at the time of the Wave 2 interview and were at least 18 years of age. In order to restrict inferences to the population of Wave 1 age-eligible, analysts may use the variable AGEELIG in the Wave 2 Core Data file. Researchers wishing to compute design-based variance estimates may use the variables STRATUM and CLUSTER. These variables were constructed from the original sampling units for the purpose of variance estimation; the former may be treated as (pseudo) strata and the latter as (pseudo) Primary Sampling Units (PSUs). Users may refer to ICPSR 20541, National Social Life, Health, and Aging Project (NSHAP): Wave 1 for further sampling information, as well as the P.I. Documentation and visit the NORC at the University of Chicago Web site.