10.1371/journal.pone.0033513.t004 Manav Kapoor Manav Kapoor Jen-Chyong Wang Jen-Chyong Wang Sarah Bertelsen Sarah Bertelsen Kathy Bucholz Kathy Bucholz John P. Budde John P. Budde Anthony Hinrichs Anthony Hinrichs Arpana Agrawal Arpana Agrawal Andrew Brooks Andrew Brooks David Chorlian David Chorlian Danielle Dick Danielle Dick Victor Hesselbrock Victor Hesselbrock Tatiana Foroud Tatiana Foroud John Kramer John Kramer Samuel Kuperman Samuel Kuperman Niklas Manz Niklas Manz John Nurnberger Jr John Nurnberger Jr Bernice Porjesz Bernice Porjesz John Rice John Rice Jay Tischfield Jay Tischfield Xiaoling Xuei Xiaoling Xuei Marc Schuckit Marc Schuckit Howard J. Edenberg Howard J. Edenberg Laura J. Bierut Laura J. Bierut Alison M. Goate Alison M. Goate Cox-proportional hazard analysis using age at onset of habitual smoking censored at non-habitual smokers. Public Library of Science 2013 onset habitual smoking censored non-habitual 2013-02-20 07:41:14 Dataset https://plos.figshare.com/articles/dataset/_Cox_proportional_hazard_analysis_using_age_at_onset_of_habitual_smoking_censored_at_non_habitual_smokers_/337595 1<p>Analysis was performed within family clusters using additive model. Age at interview in quartiles, gender, pc1, parental smoking and parental drinking were included as covariates.</p>2<p>Nominal P values are shown uncorrected for multiple testing. The Bonferroni-corrected significance threshold is Pā€Š=ā€Š0.005.</p>