Smoking differently modifies suicide risk of affective disorders, substance use disorders, and social factors

Abstract Background Although an association between smoking and suicide has repeatedly been shown, information about a modifying influence of smoking on other risk factors for suicide is lacking. Methods Axis I and Axis II disorders, sociodemographic factors, and tobacco use were assessed by a semi-structured interview including the Structured Clinical Interview for DSM-IV Axis I (SCID-I) and Personality Disorders (SCID-II) in 163 suicides (mean age 49.6 +/− 19.3 years; 64.4% men;) by psychological autopsy method and by personal interview in 396 living population-based control persons (mean age 51.6 +/− 17.0 years; 55.8% men). Results Smoking status (current smokers, lifetime non-smokers, a…