Stability and change in reported age of onset of depression, back pain, and smoking over 29 years in a prospective cohort study.

ABSTRACT: Accurate age of onset (AOO) measurement is vital to etiologic and preventive research. While AOO reports are known to be subject to recall error, few population-based studies have been used to investigate agreement in AOO reports over more than a decade. We examined AOO reports for depression, back/neck pain, and daily smoking, in a population-based cohort spanning 29 years. A stratified sample of participants from Zurich, Switzerland (n = 591) completed a psychiatric and physical health interview 7 times between 1979, at ages 20 (males) and 21 (females), and 2008. We used one-way ANOVA to estimate intraclass correlations (ICCs) and weighted mixed models to estimate mean change over time and test for interactions with sex and clinical characteristics. Stratum-specific ICCs among those with

SUBMITTER: Paksarian D 

PROVIDER: S-EPMC5382717 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature