Associations between film exposures and smoking outcomes
| Ever tried smoking | Current smoking | |||
| OutcomeExposure | RR* (95% CI) | p for trend | RR* (95% CI) | p for trend |
| Number of smoking occurrences in films (vs ≤38) | ||||
| Model 1 | ||||
| 39–68 | 1.38 (1.25 to 1.53) | <0.001 | 1.38 (1.06 to 1.79) | <0.001 |
| 69–108 | 1.61 (1.47 to 1.77) | 1.32 (1.01 to 1.73) | ||
| ≥109 | 1.97 (1.80 to 2.15) | 2.22 (1.74 to 2.84) | ||
| Model 2 | ||||
| 39–68 | 1.36 (1.22 to 1.51) | <0.001 | 1.24 (0.92 to 1.66) | <0.001 |
| 69–108 | 1.58 (1.43 to 1.75) | 1.30 (0.98 to 1.73) | ||
| ≥109 | 1.91 (1.73 to 2.10) | 2.08 (1.60 to 2.70) | ||
| Model 3 | ||||
| 39–68 | 1.30 (1.16 to 1.47) | <0.001 | 1.23 (0.88 to 1.701) | 0.01 |
| 69–108 | 1.50 (1.34 to 1.68) | 1.18 (0.85 to 1.64) | ||
| ≥109 | 1.75 (1.57 to 1.95) | 1.52 (1.11 to 2.07) | ||
| Model 4 | ||||
| 39–68 | 1.27 (1.13 to 1.43) | <0.001 | 1.14 (0.82 to 1.58) | 0.02 |
| 69–108 | 1.48 (1.32 to 1.66) | 1.17 (0.84 to 1.63) | ||
| ≥109 | 1.73 (1.55 to 1.93) | 1.47 (1.07 to 2.02) | ||
| Model 5 | ||||
| 39–68 | 1.19 (1.05 to 1.34) | <0.001 | 1.13 (0.79 to 1.61) | 0.08 |
| 69–108 | 1.41 (1.26 to 1.59) | 1.21 (0.86 to 1.71) | ||
| ≥109 | 1.59 (1.42 to 1.78) | 1.34 (0.95 to 1.87) | ||
| Model 6 | ||||
| 39–68 | 1.13 (1.00 to 1.26) | <0.001 | 1.01 (0.74 to 1.40) | 0.6 |
| 69–108 | 1.23 (1.10 to 1.37) | 0.93 (0.68 to 1.27) | ||
| ≥109 | 1.32 (1.18 to 1.46) | 0.95 (0.70 to 1.27) | ||
* Risk ratios estimated from Poisson regression models with robust error variance.
Model 1: age and gender (N=5166).
Model 2: age, gender and social factors (social class, financial difficulties, housing) (N=4485).
Model 3: age, gender and family influences (maternal age, maternal education, marital status, parity, maternal smoking, partner smoking, breast feeding, parental monitoring) (N=3491).
Model 4: age, gender, social factors and family influences (N=3397).
Model 5: age, gender, social factors, family influences and behavioural factors (attention deficit/hyperactive disorder, conduct disorder, anxiety disorder, depression disorder, sensation seeking) (N=3097).
Model 6: age, gender, social factors, family influences, behavioural factors and current factors (alcohol use, peer smoking) (N=3090).