Study on Global Ageing and Adult Health 2007, Wave 1
India, 2007
Get MicrodataIdentification
IND_2007_SAGE_v01_M
Study on Global Ageing and Adult Health 2007
Wave 1
| Name | Country code |
|---|---|
| India | IND |
World Health Survey [hh/whs]
The Study on Global Ageing and Adult Health is the second wave of the World Health Survey which was conducted in 2003 by the World Health Organization. SAGE surveys are designed by the World Health Organization and implemented by national agencies in participating countries.
The multi-country Study on Global Ageing and Adult Health (SAGE) is run by the World Health Organization's Multi-Country Studies unit in the Innovation, Information, Evidence and Research Cluster. SAGE is part of the unit's Longitudinal Study Programme which is compiling longitudinal data on the health and well-being of adult populations, and the ageing process, through primary data collection and secondary data analysis. SAGE baseline data (Wave 0, 2002/3) was collected as part of WHO's World Health Survey http://www.who.int/healthinfo/survey/en/index.html (WHS). SAGE Wave 1 (2007/10) provides a comprehensive data set on the health and well-being of adults in six low and middle-income countries: China, Ghana, India, Mexico, Russian Federation and South Africa.
Objectives:
To obtain reliable, valid and comparable health, health-related and well-being data over a range of key domains for adult and older adult populations in nationally representative samples
To examine patterns and dynamics of age-related changes in health and well-being using longitudinal follow-up of a cohort as they age, and to investigate socio-economic consequences of these health changes
To supplement and cross-validate self-reported measures of health and the anchoring vignette approach to improving comparability of self-reported measures, through measured performance tests for selected health domains
To collect health examination and biomarker data that improves reliability of morbidity and risk factor data and to objectively monitor the effect of interventions
Additional Objectives:
To generate large cohorts of older adult populations and comparison cohorts of younger populations for following-up intermediate outcomes, monitoring trends, examining transitions and life events, and addressing relationships between determinants and health, well-being and health-related outcomes
To develop a mechanism to link survey data to demographic surveillance site data
To build linkages with other national and multi-country ageing studies
To improve the methodologies to enhance the reliability and validity of health outcomes and determinants data
To provide a public-access information base to engage all stakeholders, including national policy makers and health systems planners, in planning and decision-making processes about the health and well-being of older adults
Methods:
SAGE's first full round of data collection included both follow-up and new respondents in most participating countries. The goal of the sampling design was to obtain a nationally representative cohort of persons aged 50 years and older, with a smaller cohort of persons aged 18 to 49 for comparison purposes. In the older households, all persons aged 50+ years (for example, spouses and siblings) were invited to participate. Proxy respondents were identified for respondents who were unable to respond for themselves. Standardized SAGE survey instruments were used in all countries consisting of five main parts: 1) household questionnaire; 2) individual questionnaire; 3) proxy questionnaire; 4) verbal autopsy questionnaire; and, 5) appendices including showcards. A VAQ was completed for deaths in the household over the last 24 months. The procedures for including country-specific adaptations to the standardized questionnaire and translations into local languages from English follow those developed by and used for the World Health Survey.
Content
Household questionnaire
0000 Coversheet
0100 Sampling Information
0200 Geocoding and GPS Information
0300 Recontact Information
0350 Contact Record
0400 Household Roster
0450 Kish Tables and Household Consent
0500 Housing
0600 Household and Family Support Networks and Transfers
0700 Assets and Household Income
0800 Household Expenditures
0900 Interviewer Observations
Individual questionnaire
1000 Socio-Demographic Characteristics
1500 Work History and Benefits
2000 Health State Descriptions and Vignettes
2500 Anthropometrics, Performance Tests and Biomarkers
3000 Risk Factors and Preventive Health Behaviours
4000 Chronic Conditions and Health Services Coverage
5000 Health Care Utilization
6000 Social Cohesion
7000 Subjective Well-Being and Quality of Life (WHOQoL-8 and Day Reconstruction Method)
8000 Impact of Caregiving
9000 Interviewer Assessment
Sample survey data [ssd]
households and individuals
Version
v01: Edited, anonymous dataset for public distribution.
2011-11
Scope
The scope of the Study on Global Ageng and Adult Health includes:
HOUSEHOLD: household characteristics, housing, household and family support, assets and household income, household expenditure.
INDIVIDUAL: socio demographic characteristics, work history, health state, anthropometrics, performance tests and biomarkers, risk factors, chronic conditions and health service coverage, health care utilisation, social cohesion, subjective well-being and quality of life, caregiving.
| Topic | Vocabulary |
|---|---|
| Study on Global Ageing and Adult Health (SAGE) | Survey |
Coverage
National coverage
The household section of the survey covered all households in 19 of the 28 states in India which covers 96% of the population. Institutionalised populations are excluded. The individual section covered all persons aged 18 years and older residing within individual households.
Producers and sponsors
| Name | Affiliation |
|---|---|
| Professor P. Arokiasamy | International Institute of Population Sciences |
| Name | Affiliation | Role |
|---|---|---|
| Professors Sulabha Parsuraman | International Institute of Population Sciences | co-PI |
| Professor Hem Lhungdim | International Institute of Population Sciences | co-PI |
| Professor TV Shekhar | International Institute of Population Sciences | co-PI |
| Name | Role |
|---|---|
| US National Institute on Aging | Financial support through Interagency Agreements (OGHA 04034785; YA1323-08-CN-0020; Y1-AG-1005-01) and Grants (R01-AG034479; IR21-AG034263-0182) |
| United States Agency for International Development | financial support |
| Name | Affiliation | Role |
|---|---|---|
| Dr Richard Suzman | The National Institute on Aging's Division of Behavioral and Social Research | Dr Suzman was Instrumental in providing continuous intellectual and other technical support to SAGE and has made the entire endeavour possible |
Sampling
World Health Survey Sampling
India has 28 states and seven union territories. 19 of the 28 states were included in the design representing 96% of the population.
India used a stratified multistage cluster sample design. Six states were selected in accordance with their geographic location and level of development. Strata were defined by the 6 states:(Assam, Karnataka, Maharashtra, Rajasthan, Uttar Pradesh and West Bengal), and locality (urban or rural). There are 12 strata in total.
The 2000 Census demarcation was used as the sampling frame. Two stage and three stage sampling was adopted in rural and urban areas, respectively. In rural areas PSUs(villages) were selected probability proportional to size. The measure of size being the 2001 Census population in the village. SSUs (households) were selected using systematic sampling. TSUs (individuals) were selected using Kish tables. In urban areas, PSUs(city wards) were selected probability proportional to size. SSUs(census enumeration blocks), two were randomly selected from each PSU. TSU (households) were selected using systematic sampling. QSU (individuals) were selected as in rural areas.
A sample of 379 EAs was selected as the primary sampling units(PSU).
SAGE Sampling
The SAGE sample was pre-determined as all PSUs and households selected for the WHS/SAGE Wave 0 survey were included. Exceptions are three PSUs in Assam which were replaced as they were inaccessible due to flooding. And a further six PSUs were omitted for which the household roster information was not available.
In each selected EA, a listing of the households was conducted to classify each household into the following mutually exclusive categories:
1)Households with a WHS/SAGE Wave 0 respondent aged 50-plus: all members aged 50-plus including the WHS/SAGE Wave 0 respondent were eligible for the individual interview.
2)Households with a WHS/SAGE Wave 0 respondent aged 47-49: all members aged 50-plus including the WHS/SAGE Wave 0 respondent aged 47-49 was eligible for the individual interview.
3)Households with a WHS/SAGE Wave 0 female respondent aged 18-46: all females members aged 18-49 including the WHS/SAGE Wave 0 female respondent aged 18-46 were eligible for the individual interview.
4)Households with a WHS/SAGE Wave 0 male respondent aged 18-46: three households were selected using systematic sampling and one male aged 18-49 was eligible for the individual interview. In the households not selected, all members aged 50-plus were eligible for the individual interview.
Stages of selection
Strata: State, Locality=12
PSU: EAs=375 surveyed
SSU: Households=10424 surveyed
TSU: Individual=12198 surveyed
Household
Response rate=88%
Cooperation rate=92%
Individual:
Response rate=68%
Cooperation rate=92%
Household weights for analysis at household level and individual weights for analysis at person level were calculated. These were based on the selection probability at each stage of selection.
Household weights were post-stratified by the six states and locality according to the 2006 household projections obtained from Population Projections for India and States 2001-2026: Report of the technical group on population projections constituted by the national commission on population May 2006, Office of the Registrar General and Census Commissioner India.
Individual weights were post-stratified by the six states, locality, sex and age-groups (18-49, 50-59, 60-69, 70+) according to the 2006 projected population estimates. A second set of household and individual weights are available which are post-stratified to weight up to the number of households and 18-plus populations respectively in the entire country. Weights are not normalized.
Survey instrument
The questionnaires were based on the WHS Model Questionnaire with some modification and many new additions. A household questionnaire was administered to all households eligible for the study. A Verbal Autopsy questionnaire was administered to households that had a death in the last 24 months. An Individual questionniare was administered to eligible respondents identified from the household roster. A Proxy questionnaire was administered to individual respondents who had cognitive limitations. A Womans Questionnaire was administered to all females aged 18-49 years identified from the household roster. The questionnaires were developed in English and were piloted as part of the SAGE pretest in 2005. All documents were translated into Hindi, Assamese, Kanada and Marathi. SAGE generic questionnaires are available as external resources.
Data collection
| Start | End |
|---|---|
| 2007-04 | 2007-08 |
| Name |
|---|
| Assam: TNS, New Delhi |
| Karnataka: ISEC, Bangalore |
| Maharashtra: ORG, New Delhi |
| Rajasthan: IHMMR, Jaipur |
| Uttar Pradesh: RDI, New Delhi |
| West Bengal: EIT, Calcutta |
The SAGE instrument was pre-tested in 2005 in India, Ghana and Tanzania. Just over 1500 persons were interviewed in total. Training of trainer workshop commenced the week of 19 February 2007 in Mumbai. Data collection was conducted by a separate agency in each state: Assam TNS, Karnataka ISEC, Maharashtra ORG, Rajasthan IHMMR and Uttar Pradesh RDI. Three representatives from each agency attended the training workshop together with the entire IIPS SAGE team: one PI, three Co-PIs, one head coordinator, three health coordinators for health examinations and seven research officers (1 per state and 1 to be based at HQ). Fieldworker training workshops were conducted in each of the six states during the months of March/April 2007. There were 3 fieldwork teams in Assam and Karanataka, four in Rajasthan and West Bengal and five in Maharashtra and Uttarpradesh. Each team comprised one male and one female interviewer and an additional person to conduct the health measurements and drawing the blood sample. Fieldwork within each state was coordinated by a research officer from IIPS who was based in the state for the duration of the fieldwork. Each of the health coordinators was responsible for the coordination of health examinations in 2 states. Overall supervision and coordination of fieldwork was conducted by a head coordinator from IIPS.
Data processing
Data editing took place at a number of stages including:
(1) office editing and coding
(2) during data entry
(3) structural checking of the CSPro files
(4) range and consistency secondary edits in Stata
Data Access
| Name | Affiliation | URL | |
|---|---|---|---|
| Nirmala Naidoo | Health Statistics and Information Systems, World Health Organization | http://apps.who.int/healthinfo/systems/surveydata | sagesurvey@who.int |
The user undertakes:
(1) to keep confidential any information concerning individual persons or households.
(2) not to distribute the data to any other user.
(3) to use the data for scientific research only.
(4) to share any planned publications with WHO prior to publication.
Publications based on SAGE data should use the following acknowledgement: "This paper uses data from the WHO Study on Global AGEing and Adult Health (SAGE)."
Disclaimer and copyrights
The data is being distributed without warranty of any kind. The responsibility for the use of the data lies with the user. In no event shall the World Health Organization be liable for damages arising from its use.
© World Health Organization 2011
Contacts
| Name | Affiliation | |
|---|---|---|
| Nirmala Naidoo | Health Statistics and Information Systems,World Health Organization | sagesurvey |
Metadata production
DDI_IND_2007_SAGE_v01_M
| Name | Affiliation | Role |
|---|---|---|
| Nirmala Naidoo | World Health Organization | Supervision and review of metadata and documentation of study |
| Yunpeng Huang | World Health Organization | Documentation of the data |
2011-11-11
Metadata version
Version 1.0 (November 2011) - Adapted version of "DDI-IND-WHO-SAGE-2007-V01" documented by WHO.