Random effects meta-analysis of nine cross sectional studies demonstrated higher exposure (typically highest vs lowest quantile) to smoking in movies was significantly associated with a doubling in risk of ever trying smoking (RR 1.93, 95% CI 1.66 to 2.25). In 8 longitudinal studies (all deemed high quality), higher exposure to smoking in movies was significantly associated with a 46% increased risk of initiating smoking (RR 1.46; 95% CI 1.23 to 1.73). These pooled estimates were significantly different from each other (p = 0.02). Moderate levels of heterogeneity were seen in the meta-analyses. Login using your SSSFT NHS OpenAthens details for full text. SSOTP - request a copy of the article from the library http://bit.ly/1Xyazai