SNAC-B 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 the health and the care of older adults.

General Design

Study Design Cohort
General Information on Follow Up (profile, frequency)

All participants of the Population Study are followed-up each time they reach the age of an older cohort at base time, i.e. at the age of 66, 72, 78, 81, 84, 87, 90, 93, 96 and 99+ years. 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

1,817 (No Limit)

Number of Participants with Biological Samples

1,800

Supplementary Information

For the Population Study, a panel of elders is taken from 10 different age cohorts, beginning at the age of 60 up to 96 years with a 6-year interval between the younger cohorts (up to 78 years) and a 3-year intervals thereafter. New cohorts of 60- and 81-year olds joined the study in 2007-2010, and 2014-2016, respectively. The Care System Study is a systematic, longitudinal, individually-based collection of data of all persons 65+ years living in the area with their registration connected to assistance decisions.

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-B - Cohort 1

The SNAC-B population consists of a random sample of 60, 66, 72,78,81,84,87,90,93,96 year old individuals living both at home and in institutions, in municipality of Karlskrona.

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. Ten age cohorts were chosen with different intervals, being six years in the younger cohorts (60-78 years old), and three years in the older (81+ years old).

Selection Criteria

Age Minimum age 60, Maximum age 96
Country Sweden
Territory Karlskrona

Sample Size

Number of Participants

1,402

Data Collection Events

NameDescriptionStartEnd
SNAC-B - Cohort 1 - Baseline

The nurse interview assesses: demographic data,...

20012003
SNAC-B - Cohort 1 - Follow-up 1

This is the first follow-up for participants...

20042006
SNAC-B - Cohort 1 - Follow-up 2

Follow-up for all participants. Enrichment of...

20072009
SNAC-B - Cohort 1 - Follow-up 3

Follow-up of participants that were aged 72+...

20102012
SNAC-B - Cohort 1 - Follow-up 4

Follow-up for all participants. Enrichment of...

20132015
SNAC-B - Cohort 1 - Follow-up 5

Follow-up for all participants. Enrichment of...

20162018
SNAC-B - Cohort 1 - Follow-up 6

Follow-up for all participants. Enrichment of...

20192021

SNAC-B - Cohort 2

The SNAC-B population consists of a random sample of : 60, 81 year old individuals living both at home and in institutions, in municipality of Karlskrona.

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. Ten age cohorts were chosen with different intervals, being six years in the younger cohorts (60-78 years old), and three years in the older (81+ years old).

Selection Criteria

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

Sample Size

Number of Participants

278

Data Collection Events

NameDescriptionStartEnd
SNAC-B - Cohort 2 - Baseline

The nurse interview assesses: demographic data,...

20072009
SNAC-B - Cohort 2 - Follow-up 1

Follow-up of participants that were aged 72+...

20102012
SNAC-B - Cohort 2 - Follow-up 2

The nurse interview assesses: demographic data,...

20132015
SNAC-B - Cohort 2 - Follow-up 3

The nurse interview assesses: demographic data,...

20162018
SNAC-B - Cohort 2 - Follow-up 4

The nurse interview assesses: demographic data,...

20192021

SNAC-B - Cohort 3

The SNAC-B population consists of a random sample of 60,81 year old individuals living both at home and in institutions, in municipality of Karlskrona.

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. Ten age cohorts were chosen with different intervals, being six years in the younger cohorts (60-78 years old), and three years in the older (81+ years old).

Selection Criteria

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

Sample Size

Number of Participants

137

Data Collection Events

NameDescriptionStartEnd
SNAC-B - Cohort 3 - Baseline

The nurse interview assesses: demographic data,...

20142015
SNAC-B - Cohort 3 - Follow-up 1

The nurse interview assesses: demographic data,...

20162018
SNAC-B - Cohort 3 - Follow-up 2

The nurse interview assesses: demographic data,...

20192021

SNAC-B - Care Sytem Study

The Care System study covers all persons who reached the age of 65 and who have received elderly care by the Elderly Administration in Karlskrona (area Blekinge) or have permanent home care or rehabilitation in Karlskrona.

Sources of Recruitment

Specific Population
  • Other specific population : Users of elderly care or long-term home care or rehabilitation or special housing.

Selection Criteria

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

Data Collection Events

NameDescriptionStartEnd
SNAC-B - Care System Study - Surveys

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

2001Ongoing
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Variables classifications