Swedish National Study of Aging and Care in Nordanstig

SNAC-N is a longitudinal study on the influence of life-time environmental and biological factors on medical, psychological, and social health in late adulthood. The objective of this study is to increase the understanding of the aging process and to identify possible preventive strategies to improve the health and the care of older adults.

Overview

Acronym
SNAC-N
Website
SNAC-N
Investigators
Prof. Anders Wimo
Karolinska Institutet
Contacts
Dr. Anders Sköldunger
Karolinska Institutet

General Design

Study design
Cohort
Start - End Year
2001 -
General Information on Follow Up (profile, frequency)
Participants were followed up every 2 years then every 4 years repeatedly. New cohorts of 60- and 81-year olds joined the study in 2006, and 2013. Participants in the Care System Study are followed up each time the decision for assistance is re-evaluated. This should be done at least once a year.
Recruitment Target
  • Individuals
Number of Participants
1,504 (No Limit)
Number of Participants with Biological Samples
800

Access

Availability of data and biosamples

Possible Access to Data
Possible Access to Biosamples
Other

Marker Papers

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 15195992

Timeline

Populations

SNAC-N - Cohort 1
The SNAC-N population consists of a random sample ages 60, 66, 72, 78, 78, 81, 84, 87, 90, 93, 96, 99, 100+ year old individuals living both at home and in institutions, in the municipality of Nordanstig.

Selection Criteria

Minimum age
60
Countries
  • Sweden
Territory
Nordanstig

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 (81+ years old).

Sample Size

Number of Participants
766
Supplementary information about number of participants
Baseline: 766 participants
Follow-up 1: 206 participants
Follow-up 2: 415 participants
Follow-up 3: 170 participants
Follow-up 4: 266 participants

Data Collection Events

# Name Data sources Data sources - Biosamples Start End
0 SNAC-N - Cohort 1 - Baseline
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2001 2004
1 SNAC-N - Cohort 1 - Follow-up1
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2005 2006
2 SNAC-N - Cohort 1 - Follow-up2
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2007 2011
3 SNAC-N - Cohort 1 - Follow-up3
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2011 2012
4 SNAC-N - Cohort 1 - Follow-up4
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2013 2015
5 SNAC-N - Cohort 1 - Follow-up5
  • Questionnaires
  • Cognitive measures
  • Physical measures
2016 2018
SNAC-N - Cohort 2
This population consists of a random sample ages 60, 81 year old individuals living both at home and in institutions, in the municipality of Nordanstig.

Selection Criteria

Minimum age
60
Maximum age
81
Countries
  • Sweden
Territory
Nordanstig

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.

Sample Size

Number of Participants
265
Supplementary information about number of participants
Baseline: 265 participants
Follow-up 1: 68 participants
Follow-up 2: 185 participants

Data Collection Events

# Name Data sources Data sources - Biosamples Start End
0 SNAC-N - Cohort 2 - Baseline
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2006 2012
1 SNAC-N - Cohort 2 - Follow-up1
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2011 2012
2 SNAC-N - Cohort 2 - Follow-up2
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2013 2015
3 SNAC-N - Cohort 2 - Follow-up3
  • Questionnaires
  • Cognitive measures
  • Physical measures
2016 2018
SNAC-N - Cohort 3
This population consists of a random sample ages 60, 81 year old individuals living both at home and in institutions, in the municipality of Nordanstig.

Selection Criteria

Minimum age
60
Maximum age
81
Countries
  • Sweden
Territory
Nordanstig

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 (81+ years old).

Sample Size

Number of Participants
273

Data Collection Events

# Name Data sources Data sources - Biosamples Start End
0 SNAC-N - Cohort 3 - Baseline
  • Questionnaires
  • Cognitive measures
  • Physical measures
  • Biosamples
  • Blood
2013 2015
1 SNAC-N - Cohort 3 - Follow-up1
  • Questionnaires
  • Cognitive measures
  • Physical measures
2016 2018
SNAC-N - Care System Study
This population consists of all persons over the age of 65 who are receiving long-term elderly care and/or have permanent home care/rehabilitation in the Nordanstig municipality with their registration connected to assistance decisions.

Selection Criteria

Minimum age
65
Countries
  • Sweden
Territory
Nordanstig
Other Criteria
Persons who only have meals-on-wheels, alarm or transport services from the municipality and/or the county council are excluded.

Sources of Recruitment

Specific Population
  • Other specific population : Users of home help services, long-term home health care or rehabilitation or special housing.

Sample Size

Number of Participants
200

Data Collection Events

# Name Data sources Data sources - Biosamples Start End
0 SNAC-N - Care System Study - Surveys
  • Questionnaires
  • Cognitive measures
  • Administrative databases
2001 Ongoing

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: 2026-05-27T09:31:59.761