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 Website

Investigators
Contacts
Start Year

2001

General Design

Study Design Cohort
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

Yes
No
Not Applicable
Don't Know
Possible Access to Data

Possible Access to Biosamples

Other

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 15195992

Study Timeline

Each colour in the timeline graph below represents a separate Study Population, while each segment in the graph represents a separate Data Collection Event. Clicking on a segment gives more detailed information on a Data Collection Event.

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.

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).

Selection Criteria

Age Minimum age 60
Country Sweden
Territory Nordanstig

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

NameDescriptionStartEnd
SNAC-N - Cohort 1 - Baseline

Information was collected through an...

20012004
SNAC-N - Cohort 1 - Follow-up1

Information was collected through an...

20052006
SNAC-N - Cohort 1 - Follow-up2

Information was collected through an...

20072011
SNAC-N - Cohort 1 - Follow-up3

Information was collected through an...

20112012
SNAC-N - Cohort 1 - Follow-up4

Information was collected through an...

20132015
SNAC-N - Cohort 1 - Follow-up5

Information was collected through an...

20162018

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.

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.

Selection Criteria

Age Minimum age 60, Maximum age 81
Country Sweden
Territory Nordanstig

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

NameDescriptionStartEnd
SNAC-N - Cohort 2 - Baseline

Information was collected through an...

20062012
SNAC-N - Cohort 2 - Follow-up1

Information was collected through an...

20112012
SNAC-N - Cohort 2 - Follow-up2

Information was collected through an...

20132015
SNAC-N - Cohort 2 - Follow-up3

Information was collected through an...

20162018

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.

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).

Selection Criteria

Age Minimum age 60, Maximum age 81
Country Sweden
Territory Nordanstig

Sample Size

Number of Participants

273

Data Collection Events

NameDescriptionStartEnd
SNAC-N - Cohort 3 - Baseline

Information was collected through an...

20132015
SNAC-N - Cohort 3 - Follow-up1

Information was collected through an...

20162018

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.

Sources of Recruitment

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

Selection Criteria

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

Sample Size

Number of Participants

200

Data Collection Events

NameDescriptionStartEnd
SNAC-N - Care System Study - Surveys

Data were collected each year in the spring....

2001Ongoing
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Variables classifications