Article
Exploring the inter-relationship of smoking age-at-onset, cigarette consumption and smoking persistence: genes or environment?
Psychological medicine - 1 Sept 2007
Morley Katherine I, Lynskey Michael T, Madden Pamela A F, Treloar Susan A, Heath Andrew C, Martin Nicholas G
Abstract excerpt
BACKGROUND: We investigated the genetic and environmental contributions to covariation between smoking age-at-onset, cigarette consumption and smoking persistence. METHOD: Multivariate biometrical modelling methods were applied to questionnaire data from Australian twins and their siblings (14 472 individuals from 6247 families). The contributions of genetic and environmental factors to covariation between the...
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