background: widespread use of the internet, lack of proper use and non-targeted searches, not only moves the students far from the main mission of the internet in the university but also will impact adversely on their academic status . the aim of this study was to determine the relationship between internet addiction with academic status and smoking in lorestan university of medical sciences, i...

Secondhand electronic cigarette (e-cigarette) aerosol (SHA) might impair indoor air quality and expose bystanders. This study aims to investigate exposure SHA in controlled conditions of enclosed settings simulating real-world scenario. An experiment was performed a car room, which generated during 30-minute ad libitum use an e-cigarette. The replicated on five consecutive days each setting. We...

BACKGROUND Little is known about electronic cigarette (e-cigarette) use among Chinese adolescents. We examined the prevalence of current (past 30-day) e-cigarette use and its associated factors in a large sample of adolescents in Hong Kong. METHODS We analyzed data of the School-based Survey on Smoking among Students 2012/13 from a representative sample of 45,857 secondary school students (me...

background: the aim of this study was to determine the prevalence of tobacco use and effect of lifestyle factors on cigarette and hookah use among adult re sidents of shiraz, iran. methods: in 2010, 1,000 participants were recruited in a multistage, random sampling cross-sectional population-based survey. results: response rate was 98%. prevalence of cigarette smoking was 9.7%. among cigarette ...

background cigarettes smoking is a risk factor for tuberculosis (tb). associations between smoking and tb disease have been reported, but there are few reports on the influence of smoking on the sputum smear and culture conversion time. this study surveyed the possible association between smoking and sputum smear conversion time among new smear-positive pulmonary tuberculosis patients. patients...

background: to define underlying predictors of tobacco smoking among iranian teenagers in a generalized structural equation model. materials and methods: in this cross-sectional study, a generalized structural equation model based on planned behavioral theory was used to explain the relationship among different factors such as demographic factors, subjective norms, and the intention to tobacco ...

A needle trap sampler (NTS) packed with 60–80-mesh divinylbenzene (DVB) adsorbent inside a 22-gauge stainless steel was used as micro sampling device to extract chemical compounds in electronic cigarette (e-cigarette) aerosol. The samples were then analyzed using gas chromatography (GC)-mass spectroscopy (MS) determine the constituents. Based on experimental results, e-cigarette smokers are exp...

BACKGROUND Use of electronic cigarettes (e-cigarettes) among adolescents has increased since their introduction into the US market in 2007. Little is known about the role of e-cigarette psychosocial factors on risk of e-cigarette or cigarette use in adolescence. METHODS Information on e-cigarette and cigarette psychosocial factors (use and attitudes about use in the home and among friends) wa...

IMPORTANCE The prevalence of electronic cigarette (e-cigarette) use is increasing. Population health effects will depend on cigarette smoking behaviors, levels of dual use with conventional cigarettes, and e-cigarette toxicity. OBJECTIVE To evaluate potential health effects of various scenarios of increasing promotion and use of e-cigarettes. DESIGN, SETTING, AND PARTICIPANTS A base case mo...