Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Polygenic risk score of age at smoking initiation (with different p-value thresholds) predicting age at regular drinking in target sample from NTR. On vertical axis the standardized regression coefficients (beta) from the regression analyses. In bottom row the explained variance (R2). Bars marked with a *: p<.05
