Introduction: Smokers with depressive and alcohol use disorders report more severe tobacco abstinence effects (e.g., tobacco withdrawal and craving, mood and sleep disturbance), but less is known about abstinence effects among smokers with subclinical features of these disorders.

Aims: The time-course and severity of acute abstinence effects were evaluated in smokers with and without subclinical depressive symptoms (DEP) and with and without subclinical alcohol consumption (ALC). Methods: Participants (N = 106) received smoking cessation counselling and were contingently compensated for biochemically-verified smoking abstinence. Abstinence effects were assessed pre-quit and daily for eight days post-quit.

Results/Findings: Seventy-four participants (70%) achieved eight-day continuous smoking abstinence. Generalised estimating equations revealed that time and DEP group significantly interacted to predict change in Wisconsin Smoking Withdrawal Scale (WSWS) Anxiety (Wald = 21.18, p < .01) and Questionnaire of Smoking Urges Relief from Negative Affect (Wald = 20.12, p < .01) subscale scores. Time and ALC group significantly interacted to predict change in Profile of Mood States (POMS) Fatigue subscale score (Wald = 19.78, p < .01). Compared to non-DEP smokers, DEP smokers reported higher mean post-quit scores on several measures of abstinence effects, including WSWS Sadness and POMS Total; however, pre-quit differences between DEP groups may have confounded post-quit differences.

Conclusions: Smokers with subclinical depressive symptoms endorsed high levels of abstinence effects, but it was unclear if these were related to the absence of tobacco. Smokers with subclinical alcohol consumption did not endorse high levels of abstinence effects but abstinence-related fatigue took longer to improve.

Aim: The purpose of this study is to explore how effective household smoking restrictions (HSRs) are in different age groups in predicting smoking abstinence. Methods: The study analysed the Canadian Community Health Survey (CCHS) cycle, 3.1. Smoking abstinence was defined as individuals who reported to not have smoked greater than 100 cigarettes (n = 1 024 578) and were selected for this analysis. Important covariates include sex, age, education and immigrant status. Logistic regression was used to assess the association between smoking household restrictions and smoking abstinence when taking covariates into consideration. Results: Individuals who implemented HSRs reported to be abstinent from smoking at 12% compared to those with no HSRs at 0.7%. When adjusted for covariates of interest, the odds ratio (OR) for smoking abstinence was 1.43 (95% confidence interval (CI): 1.04, 1.97; P < .026). It was found that age was a strong predictor of smoking abstinence particularly in youths at 3.11 (95% CI: 1.65, 5.84; P < .001) and young adults at 1.92 (95% CI: 1.44, 1.92; P < .001). Conclusion: It is suggested that HSRs is an important anti-tobacco socialisation tool in youths and young adults. Individuals living in a home with HSRs may internalise behavioural norms against the initiation or continuation of smoking.