It has been known that active smoking and passive smoking [1] have contributed increased risks of cardiovascular diseases (CVD), mental health, and mortality including in the Scottish adults (data in 1998–2003 and 2008–2011) [2,3]. The law banning smoking in public places in Scotland has been approved and implemented after scientific evidence was provided [4]. The considerable benefits achieved included air quality improvement, avoidance of adverse health outcomes and broader policy empowerment in Scotland while the importance of learning from other administrations, and political and professional leadershipwere also noted until 2008. In this study, it was aimed to examine the effect of home smoking ban on adult CV health in a country-wide and population-based setting. As described elsewhere in detail [5], Scottish Health Survey (http:// www.scotland.gov.uk/Topics/Statistics/Browse/Health/scottish-healthsurvey) has been a country-wide, population-based, multi-year study. It provides a detailed picture of the health of the Scottish population in private households and is designed to make a major contribution to the monitoring of health in Scotland. It is essential for the Scottish Government's forward planning, for identifying gaps in health service provision and for identifying which groups are at particular risk of future ill-health. Formore surveydesigndetails including sample sizeestimation, they can be found here: http://www.scotland.gov.uk/Topics/Statistics/ Browse/Health/scottish-health-survey/SurveyDesignContent. In the current analysis, the most recent study wave in 2012 with available data on demographics, lifestyle factors, smoking rule at home, and self-reported ever CVD and events occurred in the last year in adults aged 20 and above which was obtained by household interview was included. Study exposure variables included age, sex, education level, bodymass index, smoking status (current, past, or never), alcohol status (current, past, or never), high blood pressure status, and home smoking rule (anywhere, in certain areas, outdoor areas, or not allowed). Study outcomes were self-reported ever CVD and events occurred in the last year including angina, heart attack, abnormal heart rhythm, other heart troubles, and stroke. In the first step, associations between home smoking rule and adult ever CVDwere carried out. In the second step, associations between home smoking rule and adult CVD occurred in the last yearwere examined. Effects were estimated by using odds ratios (OR) and 95% confidence intervals (CI), with P b 0.05 considered statistically significant. Statistical software STATAversion13.0 (STATA, College Station, Texas,USA) was used to perform all the analyses. Since it is only a secondary data analysis in the present study, no further ethics approval was required. Of 4646 adults included in the study cohort, 4635 with valid data on all exposures and outcomeswere eligible for statistical analysis. Themean age was 12.5 while the range was 20–99. 566 (12.2%) adults reported no restriction of smoking at home and 695 (15.0%) reported smoking was allowed in certain areas of the housing. 2810 (60.6%) adults reported smoking only allowed in outdoor areas while 564 (12.2%) reported nonsmoking was allowed in the households. Table 1 shows associations between home smoking rule and self-reported CVD by subtypes in adults. Adults less reported angina (OR 0.60, 95%CI 0.43–0.86, P = 0.005) and heart attack (OR 0.55, 95%CI 0.37–0.81, P = 0.003) if smoking were only allowed in outdoor areas, compared to no restriction at home. In addition,