Swedish National Study of Aging and Care in Kungsholmen
SNAC-K is a longitudinal study on the influence of life-time environmental and biological factors on medical, psychological and social health in late adulthood. It aims to increase the understanding of the aging process, and to identify possible preventive strategies to improve health and care of older adults.
The study consists of two parts: the population part and the care and services part. In the population part, a large, representative panel of elders in different age cohorts is followed over time to record and describe the aging process from different aspects. In the care and services part, a systematic, longitudinal, individually-based collection of data is performed concerning provision of care and services together with functional ability, specific health care problems, and living conditions of the recipients living in the area.
Overview
- Acronym
- SNAC-K
- Website
- SNAC-K
- Investigators
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- Contacts
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General Design
- Study design
- Cohort
- Start - End Year
- 2001 -
- General Information on Follow Up (profile, frequency)
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The participants are followed-up at ages 60, 66, 72, 78, 81, 84, 87, 90, 93, 96 and 99 years. 60- 70 year olds are followed-up every 6 years and 81+ year olds are followed-up ever 3 years.
- Recruitment Target
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- Individuals
- Number of Participants
- 4,430
- Number of Participants with Biological Samples
- 3,800
- Supplementary information about number of participants
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Every six years, a new group of 60-year-olds is added to the study population and every third year a new group of 81-year-olds is added.
Three additional cohorts have been added to the baseline in 2007-2008 (81 year-olds), 2010-2012 (60 year-olds) and 2013-2015 (81 year-olds). In 2019-2021 new cohorts of 60 and 81 year-olds will be included.
More detailed information can be found here - Supplementary Information
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Every 3 years participants 81+ years old are followed-up and every 6 years, participants 60-70 are followed-up. New cohorts were added in 2007-2010 (81 year olds), 2010-2012 (60 year olds), 2013-2015 (81 year olds).
Access
Availability of data and biosamples
| Possible Access to Data | |
| Possible Access to Biosamples | |
| Other |
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A sub-sample of 613 participants underwent MRI brain scanning.
Marker Paper
Lagergren M, Fratiglioni L, Hallberg IR et al., A longitudinal study integrating population, care and social services data. The Swedish National study on Aging and Care (SNAC). Aging Clin Exp Res. 2004 Apr;16(2):158-68.
PUBMED 15195992Timeline
Populations
The SNAC-K population consists of a random sample of individuals living both at home and in institutions, in the central part of Stockholm, Kungsholmen.
Selection Criteria
- Countries
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- Sweden
- Territory
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Area of Kungsholmen/Essingeöarna
Sources of Recruitment
- General Population
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- Selected sample
- Supplementary Information
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The sample was chosen in the national project SNAC and it was stratified for age cohort and year of assessment. Eleven age cohorts were chosen with different intervals, being six years in the younger cohorts (60-78 years old), and three years in the older cohorts (78+ years old).
Sample Size
- Number of Participants
- 3,363
- Supplementary information about number of participants
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- Phase 1 2001-2004: 3363 participants baseline.
- Phase 2 2004-2007: 992 participants follow-up (81+ older).
- Phase 3 2007-2010: 2251 participants (2057 followed up (all ages), 194 new (81 year olds).
- Phase 4 2010-2012: 1528 participants(850 participants follow-up (only 81+ year olds), 678 new (60 year olds).
- Phase 5 2013-2015: 1603 participants (1408 participants follow-up (all ages), 195 new (81 year olds).
- Phase 6 2016-2018: 1291 participants.
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SNAC-K - Cohort 1 - Baseline |
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2001 | 2004 |
| 1 | SNAC-K - Cohort 1 - Follow-up1 |
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2004 | 2007 |
| 2 | SNAC-K - Cohort 1 - Follow-up2 |
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2007 | 2010 |
| 3 | SNAC-K - Cohort 1 - Follow-up3 |
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2010 | 2012 |
| 4 | SNAC-K - Cohort 1 - Follow-up4 |
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2013 | 2015 |
| 5 | SNAC-K - Cohort 1 - Follow-up5 |
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2016 | 2018 |
The population consists of a random sample of additional 81 year olds and older individuals living both at home and in institutions, in the central part of Stockholm, Kungsholmen.
Selection Criteria
- Minimum age
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81
- Countries
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- Sweden
- Territory
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Area of Kungsholmen/Essingeöarna
Sources of Recruitment
- General Population
-
- Selected sample
- Supplementary Information
-
The sample was chosen in the national project SNAC and it was stratified for age cohort and year of assessment. Eleven age cohorts were chosen with different intervals, being six years in the younger cohorts (60-78 years old), and three years in the older cohorts (78+ years old).
Sample Size
- Number of Participants
- 194
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 2 | SNAC-K - Cohort 2 - Baseline |
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2007 | 2010 |
| 3 | SNAC-K - Cohort 2 - Follow-up1 |
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2010 | 2012 |
| 4 | SNAC-K - Cohort 2 - Follow-up2 |
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2013 | 2015 |
| 5 | SNAC-K - Cohort 2 - Follow-up3 |
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2016 | 2018 |
The population consists of an additional random sample of 60 year old individuals living both at home and in institutions, in the central part of Stockholm, Kungsholmen.
Selection Criteria
- Minimum age
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60
- Maximum age
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60
- Countries
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- Sweden
- Territory
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Area of Kungsholmen/Essingeöarna
Sources of Recruitment
- General Population
-
- Selected sample
- Supplementary Information
-
The sample was chosen in the national project SNAC and it was stratified for age cohort and year of assessment. Eleven age cohorts were chosen with different intervals, being six years in the younger cohorts (60-78 years old), and three years in the older cohorts (78+ years old).
Sample Size
- Number of Participants
- 678
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 1 | SNAC-K - Cohort 3 - Baseline |
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2010 | 2012 |
| 3 | SNAC-K - Cohort 3 - Follow-up1 |
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|
2016 | 2019 |
The SNAC-K population consists of an additional random sample of 81 year old individuals living both at home and in institutions, in the central part of Stockholm, Kungsholmen.
Selection Criteria
- Minimum age
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81
- Maximum age
-
81
- Countries
-
- Sweden
- Territory
-
Area of Kungsholmen/Essingeöarna
Sources of Recruitment
- General Population
-
- Selected sample
- Supplementary Information
-
The sample was chosen in the national project SNAC and it was stratified for age cohort and year of assessment. Eleven age cohorts were chosen with different intervals, being six years in the younger cohorts (60-78 years old), and three years in the older cohorts (78+ years old).
Sample Size
- Number of Participants
- 195
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 1 | SNAC-K - Cohort 4 - Baseline |
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2013 | 2015 |
| 2 | SNAC-K - Cohort 4 - Follow-up1 |
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2016 | 2018 |
The population consists of all persons aged 65 years and older and living in the central part of Stockholm, Kungsholmen, and using long-term care and services.
Selection Criteria
- Minimum age
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65
- Countries
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- Sweden
- Territory
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Area of Kungsholmen/Essingeöarna
Sources of Recruitment
- Specific Population
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-
Other specific population :
Users of home help services, long-term home health care or rehabilitation or special housing.
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Other specific population :
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SNAC-K - Care System Study - Surveys |
|
2001 (February) | 2018 |
Participating Studies
| Acronym | Name | Study design | Countries |
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Harmonization Initiatives Included
| Acronym | Name |
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Datasets
| Name | Data Collection Events | Variables |
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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
Areas of Information Collected per per Population and Data Collection Event
Networks
| Acronym | Name | Harmonization Initiatives | Individual Studies |
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