Origin of Variances in the Oldest-Old: Octogenarian Twins

Overview

Acronym
OCTO-Twin
Website
OCTO-Twin
Investigators
Prof. Linda Hassing
University of Gothenburg
Contacts
Prof. Linda Hassing
University of Gothenburg

General Design

Study design
Cohort
Start - End Year
1991 - 2002
General Information on Follow Up (profile, frequency)
Recruitment Target
  • Families
Number of Participants
702
Number of Participants with Biological Samples
552

Access

Availability of data and biosamples

Possible Access to Data
Possible Access to Biosamples
Other

Marker Paper

[McClearn, G. E., Johansson, B., Berg, S., Pedersen, N. L., Ahern, F., Petrill, S. A., et al. (1997). Substantial genetic influence on cognitive abilities in twins 80 or more years old. Science, 276, 1560-1563.]

PUBMED 9171059

Timeline

Population

OCTO-Twin - Population

Selection Criteria

Minimum age
79
Maximum age
98
Countries
  • Sweden

Sources of Recruitment

Specific Population
  • Other specific population : The Swedish population-based Twin Registry

Sample Size

Number of Participants
702
Number of Participants with Biological Samples
552
Supplementary information about number of participants

Data Collection Events

# Name Data sources Data sources - Biosamples Start End
0 OCTO-Twin - wave 1
  • Questionnaires
  • Physical measures
  • Biosamples
  • Blood
1991 (February) 1994 (March)
1 OCTO-Twin - wave 2
  • Questionnaires
  • Physical measures
  • Biosamples
  • Blood
1993 (May) 1996 (May)
2 OCTO-Twin - wave 3
  • Questionnaires
  • Physical measures
  • Biosamples
  • Blood
1995 (April) 1998 (May)
3 OCTO-Twin - wave 4
  • Questionnaires
  • Physical measures
  • Biosamples
  • Blood
1997 (April) 2000 (May)
4 OCTO-Twin - wave 5
  • Questionnaires
  • Physical measures
  • Biosamples
  • Blood
1999 (December) 2002 (March)

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: 2020-12-07T11:11:02.392