Individual Study / SAGE

WHO Study on Global Ageing and Adult Health
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WHO Study on Global Ageing and Adult Health

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Datasets -
Variables -
Start Year
2002
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Investigators Contacts
  • Dr. Somnath Chatterji
    World Health Organization
  • Dr. Paul Kowal
    World Health Organization
  • Dr. Somnath Chatterji
    World Health Organization

Design

Study design
Cohort
Follow Up
Participants were assessed in 2002-2004 (wave 0), 2007–2010 (wave 1), 2014/15 (wave 2), and wave 3 will be implemented in 2017.
Supplementary Information

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 23283715

Recruitment

Recruitment Target
  • Individuals

Number of Participants

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.
Yes
No
Not applicable
Don't know

Timeline

Populations

Selection Criteria
Minimum age
18
Newborns
Twins
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.

Recruitment

Sources of recruitment
  • General population
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.

Number of Participants

Number of Participants
2,351
Number of Participants with Biological Samples
2,351
Supplementary Information about selection criteria
Wave 0: 2351
Wave 1: 4223
Data Collection Events
# Name Description Start End
0 SAGE - South Africa - Wave 0

The household data questionnaire collected information about household identification, contact and sampling details, assets, income and expenditure, malaria prevention, household care and ...

 2003 2003
1 SAGE - South Africa - Wave 1

The household data questionnaire collected information about household characteristics, housing, household and family support, assets and household income, and household expenditure.

The ...

 2007-01 2008-11
Selection Criteria
Minimum age
18
Newborns
Twins
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.

Recruitment

Sources of recruitment
  • General population
  • Participants from existing studies
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. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Participants from Existing Studies
  • World Health Survey (WHS)

Number of Participants

Number of Participants
3,937
Number of Participants with Biological Samples
3,937
Supplementary Information about selection criteria
Wave 0: 3937
Wave 1: 5108
Data Collection Events
# Name Description Start End
0 SAGE - Ghana - Wave 0

The household data questionnaire collected information about household identification, contact and sampling details, assets, income and expenditure, malaria prevention, household care and ...

 2003 2003
1 SAGE - Ghana - Wave 1

The household data questionnaire collected information about household characteristics, housing, household and family support, assets and household income, and household expenditure.

The ...

 2007-01 2008-12
Selection Criteria
Minimum age
18
Newborns
Twins
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.

Recruitment

Sources of recruitment
  • General population
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.

Number of Participants

Number of Participants
3,993
Number of Participants with Biological Samples
3,993
Supplementary Information about selection criteria
Wave 0: 3993
Wave 1: 14811
Data Collection Events
# Name Description Start End
0 SAGE - China - Wave 0

The household data questionnaire collected information about household identification, contact and sampling details, assets, income and expenditure, malaria prevention, household care and ...

 2003 2003
1 SAGE - China - Wave 1

The household data questionnaire collected information about household characteristics, housing, household and family support, assets and household income, and household expenditure.

The ...

 2007-03 2010-07
Selection Criteria
Minimum age
18
Newborns
Twins
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.

Recruitment

Sources of recruitment
  • General population
  • Participants from existing studies
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. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Participants from Existing Studies
  • World Health Survey (WHS)

Number of Participants

Number of Participants
9,989
Number of Participants with Biological Samples
9,989
Supplementary Information about selection criteria
Wave 0: 9989
Wave 1: 11230
Data Collection Events
# Name Description Start End
0 SAGE - India - Wave 0

The household data questionnaire collected information about household identification, contact and sampling details, assets, income and expenditure, malaria prevention, household care and ...

 2003 2003
1 SAGE - India - Wave 1

The household data questionnaire collected information about household characteristics, housing, household and family support, assets and household income, and household expenditure.

The ...

 2007-04 2007-08
Selection Criteria
Minimum age
18
Newborns
Twins
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.

Recruitment

Sources of recruitment
  • General population
  • Participants from existing studies
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. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Participants from Existing Studies
  • World Health Survey (WHS)

Number of Participants

Number of Participants
4,422
Number of Participants with Biological Samples
4,422
Supplementary Information about selection criteria
Wave 0: 4422
Wave 1: 4355
Data Collection Events
# Name Description Start End
0 SAGE - Russian Federation - Wave 0

The household data questionnaire collected information about household identification, contact and sampling details, assets, income and expenditure, malaria prevention, household care and ...

 2003 2003
1 SAGE - Russia - Wave 1

The household data questionnaire collected information about household characteristics, housing, household and family support, assets and household income, and household expenditure.

The ...

 2007-09 2010-08
Selection Criteria
Minimum age
18
Newborns
Twins
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.

Recruitment

Sources of recruitment
  • General population
  • Participants from existing studies
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. A number of participants were also selected from a cohort created during the 2002–2004 World Health Survey (WHS).
Participants from Existing Studies
  • World Health Survey (WHS)

Number of Participants

Number of Participants
38,745
Number of Participants with Biological Samples
38,745
Supplementary Information about selection criteria
Wave 0: 38745
Wave 1: 2742
Data Collection Events
# Name Description Start End
0 SAGE - Mexico - Wave 0

The household data questionnaire collected information about household identification, contact and sampling details, assets, income and expenditure, malaria prevention, household care and ...

 2003 2003
1 SAGE - Mexico - Wave 1

The household data questionnaire collected information about household characteristics, housing, household and family support, assets and household income, and household expenditure.

The ...

 2009-11 2010-01
2 SAGE - Mexico - Wave 2

The household data questionnaire collected information about household characteristics, housing, household and family support, assets and household income, and household expenditure.

The ...

 2014-07 2014-10

Classifications

Socio-demographic and economic characteristics
Lifestyle and behaviours
Birth, pregnancy and reproductive health history
Perception of health, quality of life, development and functional limitations
Diseases
Symptoms and signs
Medication and supplements
Non-pharmacological interventions
Health and community care services utilization
Death
Physical measures and assessments
Laboratory measures
Cognition, personality and psychological measures and assessments
Life events, life plans, beliefs and values
Preschool, school and work life
Social environment and relationships
Physical environment
Administrative information
Cognitive functioning
Personality
Psychological distress and emotions
Other psychological measures and assessments
Life events
Beliefs and values
Perception of health
Quality of life
Life course development
Functional limitations
Other perception of health, quality of life and functional limitation-related information
Tobacco
Alcohol
Drugs
Nutrition
Breastfeeding
Physical activity
Sleep
Sexual behaviours and orientation
Technological devices
Misbehaviour and criminality
Other and unspecified lifestyle information

Socio-demographic and economic characteristics

Age/birthdate
Sex/gender
Marital/partner status
Family and household structure
Education
Residence
Ethnicity, race and religion
Language
Labour force and retirement
Income, possessions, and benefits

Lifestyle and behaviours

Tobacco
Alcohol
Nutrition
Physical activity
Transportation
Other and unspecified lifestyle information

Perception of health, quality of life, development and functional limitations

Perception of health
Quality of life
Functional limitations
Use of assistive devices
Other perception of health, quality of life and functional limitation-related information

Diseases

Certain infectious and parasitic diseases (A00-B99)
Endocrine, nutritional and metabolic diseases (E00-E90)
Mental and behavioural disorders (F00-F99)
Diseases of the nervous system (G00-G99)
Diseases of the eye and adnexa (H00-H59)
Diseases of the ear and mastoid process (H60-H95)
Diseases of the circulatory system (I00-I99)
Diseases of the respiratory system (J00-J99)
Diseases of the digestive system (K00-K93)
Diseases of the musculoskeletal system and connective tissue (M00-M99)
Injury, poisoning and certain other consequences of external causes (S00-T98)
Diseases without precise specification or falling into multiple categories

Symptoms and signs

Symptoms and signs involving the circulatory and respiratory systems (R00-R09)
Symptoms and signs involving nervous and musculoskeletal systems (R25-R29)
Symptoms and signs involving cognition, perception, emotional state and behaviour (R40-R46)
Symptoms related to multiple categories

Medication and supplements

Medication and supplement intake

Non-pharmacological interventions

Surgical interventions
Radiological interventions
Laboratory diagnosis interventions
Other and unspecified non-pharmacological interventions

Health and community care services utilization

Visits to health professionals
Hospitalizations
Other health and community care

Death

Vital status
Cause of death

Physical measures and assessments

Physical characteristics
Anthropometry
Circulation and respiration
Muscles, skeleton and mobility
Sensory and pain

Cognition, personality and psychological measures and assessments

Cognitive functioning
Psychological distress and emotions

Life events, life plans, beliefs and values

Life events

Social environment and relationships

Social network
Social participation
Social support
Other social environment characteristics

Physical environment

Built environment/neighbourhood characteristics

Administrative information

Identifiers
Date and time-related information
Questionnaire and interview-related information
Physical and cognitive measure and biosample-related information
Data and sample collection center-related information
Other administrative information

Cognitive functioning

Verbal Fluency
Wechsler Adult Intelligence Scale (Digit Span)
World Health Organization-University of California-Los Angeles Auditory Verbal Learning Test

Psychological distress and emotions

Composite International Diagnostic Interview

Life events

Day Reconstruction Method

Quality of life

World Health Organization Quality of Life Scale

Functional limitations

World Health Organization Disability Assessment Schedule

Physical activity

International Physical Activity Questionnaire