A Longitudinal Twin and Sibling Study of Associations between Insomnia and Depression Symptoms in Young Adults.

ABSTRACT:

Study objectives

To estimate genetic and environmental influences on the associations between insomnia and depression symptoms concurrently and longitudinally.

Methods

Behavioral genetic analyses were conducted on data from the British longitudinal G1219 twin/sibling study. One thousand five hundred fiftysix twins and siblings participated at Time 1 (mean age = 20.3 years, SD = 1.76). Eight hundred sixty-two participated at Time 2 (mean age = 25.2 years, SD = 1.73 years). Participants completed the Insomnia Symptoms Questionnaire and the Short Mood and Feelings Questionnaire to assess symptoms of insomnia and depression respectively.

Results

Genetic effects accounted for 33% to 41% of the variance of the phenotypes. The phenotypic correlations were moderate (r = 0.34

SUBMITTER: Gregory AM 

PROVIDER: S-EPMC5070752 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature