WHO Study on Global Ageing and Adult Health
This study was created to improve the empirical understanding of the health and well-being of older adults in less developed countries, as part of a survey programme at WHO designed to develop a reliable data collection platform and data collection methods that improve comparability of data across countries.
Overview
- Acronym
- SAGE
- Website
- SAGE
- Investigators
-
- Contacts
-
General Design
- Study design
- Cohort
- Start - End Year
- 2002 -
- General Information on Follow Up (profile, frequency)
-
Participants were assessed in 2002-2004 (wave 0), 2007–2010 (wave 1), 2014/15 (wave 2), and wave 3 will be implemented in 2017.
- Recruitment Target
-
- Individuals
- Number of Participants
- 63,437
- Number of Participants with Biological Samples
- 63,437
Access
Availability of data and biosamples
| Possible Access to Data | |
| Possible Access to Biosamples | |
| Other |
|
SAGE provides Access to microdata with all metadata as per DDI standards.
Marker Paper
Kowal, P. et al. Data Resource Profile: The World Health Organization Study On Global Ageing And Adult Health (SAGE). International Journal of Epidemiology 41.6 (2012): 1639-1649.
PUBMED 23283715Timeline
Populations
SAGE - South Africa
The population consists of people aged 18 years and older in South Africa. As the focus of SAGE is older adults, a much larger sample of respondents aged 50 years and older were selected with a smaller comparative sample of respondents aged 18-49 years.
Selection Criteria
- Minimum age
-
18
- Countries
-
- South Africa
- Other Criteria
- Institutionalized people and respondents who can't answer the questions because of poor physical health or poor cognition were excluded. Proxy respondents were identified for respondents who were unable to respond themselves.
Sources of Recruitment
- General Population
-
- Selected sample
- Supplementary Information
-
Participants were recruited according to a multistage cluster sampling design. All 50+ respondents in a household were interviewed. The younger adults were interviewed in separate households.
Sample Size
- Number of Participants
- 2,351
- Number of Participants with Biological Samples
- 2,351
- Supplementary information about number of participants
-
Wave 0: 2351
Wave 1: 4223
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SAGE - South Africa - Wave 0 |
|
2003 | 2003 | |
| 1 | SAGE - South Africa - Wave 1 |
|
|
2007 (January) | 2008 (November) |
SAGE - Ghana
The population consists of people aged 18 years and older in Ghana. As the focus of SAGE is older adults, a much larger sample of respondents aged 50 years and older were selected with a smaller comparative sample of respondents aged 18-49 years.
Selection Criteria
- Minimum age
-
18
- Countries
-
- Ghana
- Other Criteria
- Institutionalized people and respondents who can't answer the questions because of poor physical health or poor cognition were excluded. Proxy respondents were identified for respondents who were unable to respond themselves.
Sources of Recruitment
- General Population
-
- Selected sample
- Participants from Existing Studies
-
- World Health Survey (WHS)
- Supplementary Information
-
Participants were recruited according to a multistage cluster sampling design. All 50+ respondents in a household were interviewed. The younger adults were interviewed in separate households. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Sample Size
- Number of Participants
- 3,937
- Number of Participants with Biological Samples
- 3,937
- Supplementary information about number of participants
-
Wave 0: 3937
Wave 1: 5108
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SAGE - Ghana - Wave 0 |
|
2003 | 2003 | |
| 1 | SAGE - Ghana - Wave 1 |
|
|
2007 (January) | 2008 (December) |
SAGE - China
The population consists of people aged 18 years and older in China. As the focus of SAGE is older adults, a much larger sample of respondents aged 50 years and older were selected with a smaller comparative sample of respondents aged 18-49 years.
Selection Criteria
- Minimum age
-
18
- Countries
-
- China
- Other Criteria
- Institutionalized people and respondents who can't answer the questions because of poor physical health or poor cognition were excluded. Proxy respondents were identified for respondents who were unable to respond themselves.
Sources of Recruitment
- General Population
-
- Selected sample
- Supplementary Information
-
Participants were recruited according to a multistage cluster sampling design. All 50+ respondents in a household were interviewed. The younger adults were interviewed in separate households.
Sample Size
- Number of Participants
- 3,993
- Number of Participants with Biological Samples
- 3,993
- Supplementary information about number of participants
-
Wave 0: 3993
Wave 1: 14811
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SAGE - China - Wave 0 |
|
2003 | 2003 | |
| 1 | SAGE - China - Wave 1 |
|
|
2007 (March) | 2010 (July) |
SAGE - India
The population consists of people aged 18 years and older in India. As the focus of SAGE is older adults, a much larger sample of respondents aged 50 years and older were selected with a smaller comparative sample of respondents aged 18-49 years.
Selection Criteria
- Minimum age
-
18
- Countries
-
- India
- Other Criteria
- Institutionalized people and respondents who can't answer the questions because of poor physical health or poor cognition were excluded. Proxy respondents were identified for respondents who were unable to respond themselves.
Sources of Recruitment
- General Population
-
- Selected sample
- Participants from Existing Studies
-
- World Health Survey (WHS)
- Supplementary Information
-
Participants were recruited according to a multistage cluster sampling design. All 50+ respondents in a household were interviewed. The younger adults were interviewed in separate households. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Sample Size
- Number of Participants
- 9,989
- Number of Participants with Biological Samples
- 9,989
- Supplementary information about number of participants
-
Wave 0: 9989
Wave 1: 11230
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SAGE - India - Wave 0 |
|
2003 | 2003 | |
| 1 | SAGE - India - Wave 1 |
|
|
2007 (April) | 2007 (August) |
SAGE - Russian Federation
The population consists of people aged 18 years and older in Russia. As the focus of SAGE is older adults, a much larger sample of respondents aged 50 years and older were selected with a smaller comparative sample of respondents aged 18-49 years.
Selection Criteria
- Minimum age
-
18
- Countries
-
- Russian
- Other Criteria
- Institutionalized people and respondents who can't answer the questions because of poor physical health or poor cognition were excluded. Proxy respondents were identified for respondents who were unable to respond themselves.
Sources of Recruitment
- General Population
-
- Selected sample
- Participants from Existing Studies
-
- World Health Survey (WHS)
- Supplementary Information
-
Participants were recruited according to a multistage cluster sampling design. All 50+ respondents in a household were interviewed. The younger adults were interviewed in separate households. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Sample Size
- Number of Participants
- 4,422
- Number of Participants with Biological Samples
- 4,422
- Supplementary information about number of participants
-
Wave 0: 4422
Wave 1: 4355
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SAGE - Russian Federation - Wave 0 |
|
2003 | 2003 | |
| 1 | SAGE - Russia - Wave 1 |
|
|
2007 (September) | 2010 (August) |
SAGE - Mexico
The population consists of people aged 18 years and older in Mexico. As the focus of SAGE is older adults, a much larger sample of respondents aged 50 years and older were selected with a smaller comparative sample of respondents aged 18-49 years.
Selection Criteria
- Minimum age
-
18
- Countries
-
- Mexico
- Other Criteria
- Institutionalized people and respondents who can't answer the questions because of poor physical health or poor cognition were excluded. Proxy respondents were identified for respondents who were unable to respond themselves.
Sources of Recruitment
- General Population
-
- Selected sample
- Participants from Existing Studies
-
- World Health Survey (WHS)
- Supplementary Information
-
Participants were recruited according to a multistage cluster sampling design. All 50+ respondents in a household were interviewed. The younger adults were interviewed in separate households. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Sample Size
- Number of Participants
- 38,745
- Number of Participants with Biological Samples
- 38,745
- Supplementary information about number of participants
-
Wave 0: 38745
Wave 1: 2742
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SAGE - Mexico - Wave 0 |
|
2003 | 2003 | |
| 1 | SAGE - Mexico - Wave 1 |
|
|
2009 (November) | 2010 (January) |
| 2 | SAGE - Mexico - Wave 2 |
|
|
2014 (July) | 2014 (October) |
Participating Studies
| Acronym | Name | Study design | Countries |
|---|
Harmonization Initiatives Included
| Acronym | Name |
|---|
Datasets
| Name | Data Collection Events | Variables |
|---|
Areas of Information Collected
- Socio-demographic and economic characteristics
- Death
- Lifestyle and behaviours
- Physical measures and assessments
- Birth, pregnancy and reproductive health history
- Laboratory measures
- Perception of health, quality of life, development and functional limitations
- Cognition, personality and psychological measures and assessments
- Diseases
- Life events, life plans, beliefs and values
- Symptoms and signs
- Preschool, school and work life
- Medication and supplements
- Social environment and relationships
- Non-pharmacological interventions
- Physical environment
- Health and community care services utilization
- Administrative information
Variables Content Summary
Areas of Information Collected
No Areas of Information Collected
No Scales Collected
Areas of Information Collected per per Population and Data Collection Event
No Areas of Information Collected
No Scales Collected
Networks
| Acronym | Name | Harmonization Initiatives | Individual Studies |
|---|
Last Update: 2020-02-05T11:08:04.773