Feasibility study of robotic hypofractionated lung radiotherapy by individualized internal target volume and XSight Spine Tracking: A preliminary dosimetric evaluation

published_or_final_versio

Brief advice and active referral for smoking cessation services among community smokers: a study protocol for randomized controlled trial

published_or_final_versio

Electronic cigarette use did not predict quitting at 6-month follow-up among adult smokers in Hong Kong

研討會主題:「推動無煙文化 共享綠色生活」Abstract & oral presentatio

Prevalence and predictors of third hand smoke exposure in Hong Kong: findings from a territory-wide survey in 2014

研討會主題:「推動無煙文化 共享綠色生活」Significance and aim Third hand smoke (THS) exposure was associated with adverse health. Most studies were conducted in Western countries. We studied the pattern and factors associated with THS exposure in Chinese adults in Hong Kong. Methods A subsample of 910 respondents (59.9% female, aged 40.1 ± 15.2 and 62.1% married)were randomly selected from 2419 adults in a telephone survey in 2014. THS exposure anywhere was measured by a question of “In the past 7 days, have you ever smelled the odor of cigarette from the air, any objects, people or self, while you did not witness any burning cigarettes nearby?”. A similar question was used for THS at home. Duration of THS exposure anywhere (hours/day) and at home (days/week)were also reported. Because of oversampling of ex- and current smokers, weighting by sex, age, and smoking prevalence according to Hong Kong Census and Thematic Household Surveywas done. Results For THS exposure anywhere, the prevalence was 37.9% (mean hours per day: 0.84 ± 1.02). Respondents aged 60-65 were less likely to be exposed (vs. aged <30; odds ratio [OR]: 0.60, 95%CI: 0.37 to 0.96). Those with secondary education were more likely (vs. primary education; OR: 1.74, 95%CI: 1.08 to 2.82) to be exposed. Having any and the number of smoking family members were associated with longer hours of exposure per day (β-coefficient [β]: 0.38, 95%CI: 0.14 to 0.63 and β: 0.21, 95%CI: 0.04 to 0.38 respectively). For THS exposure at home, the prevalencewas 16.9% (mean days per week: 4.01 ± 2.36). Currently smoking (OR: 1.89, 95%CI: 1.06 to 3.39) was associated with more THS exposure. Having household income ≥HK$30,000 (OR: 0.57, 95%CI: 0.37 to 0.87), having secondary and tertiary education (OR: 0.57, 95%CI: 0.37 to 0.87 and OR: 0.38, 95%CI: 0.23 to 0.64 respectively) and living in private housing (OR: 0.56, 95%CI: 0.41 to 0.77) were associated with less THS exposure. Having secondary and tertiary education (β: -1.90, 95%CI: -2.82 to -0.97 and β: 0.-2.41, 95%CI: -3.39 to -1.43) and living in private housing (β: -0.78, 95%CI: -1.44 to -0.12) were associated with fewer days of exposure per week. Having a smokefree home was not associatedwith any of the above THS exposure variables. Conclusions This first study on Chinese adult THS exposure showed THS exposure was prevalent. Smokers have to quit smoking completely as they would bring THS into their homes even if they smoke outside. Further studies on health impacts of THS and effective interventions to eliminate THS are warranted

Support for plain cigarette packaging and its relation with reactions to current graphic health warning: a population-based cross-sectional study

Poster Session 2: no. POS2-122BACKGROUND: Large graphic health warning (GHW) and plain packaging (PP) can effectively warn about the risk of smoking and reduce smoking. To counteract tobacco industry opposition against the PP legislation, governments need strong public support. However, such support has not been gauged in Asia and little is known about its associated factors elsewhere. We gauged the support for PP in Hong Kong, and explore how it varied with different reactions to the current GHW (covering 50% of the packaging) in Hong Kong. METHODS: We included 2,337 respondents (932 never smokers, 844 ex-smokers and 561 current smokers) from a two-stage random sampling telephone survey in 2015 in the analysis. Four reactions to the current GHW in the past 30 days including (i) noticing (all respondents), (ii) thinking of harms of smoking (all respondents), (iii) thinking of quitting (ex- and current smokers) and (vi) forgoing cigarettes (current smokers) were enquired. Also, all respondents were briefly introduced about PP, and asked if they supported it. In each smoking status, prevalence ratio (PR) was used to examine the association of support for PP with reactions to GHW and other factors in each group of smoking status. RESULTS: Over three-quarters of non-smokers (79.7% of never smokers, 76.4% of ex-smokers) and about half (50.7%) of current smokers supported PP. Socio-demographic factors, noticing current GHW and thinking of smoking harms due to GHW were not significantly associated with the support in never smokers. In ex-smokers, only thinking of quitting (PR=1.12, 95% CI 1.02-1.22) was associated with more support. In current smokers, adjusted for all covariates, thinking of smoking harms (PR=1.26, 95% CI 1.05-1.51), thinking of quitting (PR=1.31, 95% CI 1.08-1.59) and forgoing cigarettes due to GHW (PR=1.45, 95% CI 1.16-1.81) were associated with greater support for PP. CONCLUSIONS: Public support for PP is strong in Hong Kong, supporting the advocacy and legislation of PP. Thinking of smoking harms and quitting, and forgoing cigarettes due to current GHW were associated with greater support for PP in current smokers, which suggest that strengthening current GHW could increase smokers’ support for PP

Disagreement on electronic cigarette regulation was associated with less support for tobacco control policy in Hong Kong

Poster Session 2: no. POS2-85INTRODUCTION: Electronic cigarette (EC) is increasingly popular and may undermine support for tobacco control policies. We investigated if disagreement on EC regulation was associated with less support for stronger tobacco control policies in Hong Kong. METHODS: In 2015, 4517 subjects (males 48.5%; mean age 50.4, SD 17.7 years) with oversampling of current and ex-smokers were interviewed through landline random digit dialing. Disagreements on 4 proposed EC regulations on publicity, use in smokefree area, sales to minors, and nicotine- free EC sales were recorded. Support for 8 stronger tobacco control policies were assessed. Logistic regression yielded adjusted odds ratios (AORs) of support for stronger tobacco control in relation to disagreement (vs agreement) on EC regulation, adjusting for age, sex, family income, smoking status, smoking family members and knowledge on secondhand smoke. Data were weighted by the distribution of sex, age, and smoking status according to Hong Kong census data. RESULTS: Disagreement on EC regulation ranged from 6.2% to 28.3%. Each disagreement was significantly associated with lower AOR (0.24-0.53) for annual tobacco tax increase, smokefree area extension and banning tobacco display in retail stores. Commonly lower AORs (0.26-0.61) for banning smoking in all public outdoor areas, showing smoking related diseases, enlarging pictorial warning on cigarette packs, total ban on tobacco sales and use were observed in relation to disagreement. Compared with agreement on all 4 EC regulations, disagreement on any EC regulation was significantly associated with lower AORs of 5 supporting stronger tobacco control policies, i.e. increasing tobacco tax annually (0.36), banning smoking in all public outdoor areas (0.49), banning tobacco display in retail stores (0.44), total ban on tobacco sales (0.56) and use (0.55). Similar pattern of lower AORs were observed for disagreement on all EC regulations compared with agreeing all. CONCLUSIONS: Disagreement on EC regulation was associated with less support for stronger tobacco control policy. Future research should assess whether advocacy for EC regulation could also garner public support for tobacco control