Evaluation groups* | Evaluation strategy | ||||||||
---|---|---|---|---|---|---|---|---|---|
Assigned | Exposed | Control | Efficacy evaluation† | Effectiveness evaluation‡ | |||||
(n=327) | (n=210) | (n=344) | Exposed v control | Assigned v control | |||||
%yes | %yes | %yes | OR§ | 95% CI | p Value | OR | 95% CI | p Value | |
*Random assignment placed 327 participants in the treatment group; of these, 210 were exposed to ⩾3 of 5 core program modules. | |||||||||
†The efficacy evaluation compared parents who reported exposure to ⩾3 modules (n=210) with controls (n=344). | |||||||||
‡The effectiveness evaluation compared parents randomly assigned to treatment (n=327) with controls (n=344). | |||||||||
§Odds ratios adjusted for child’s sex, parent’s sex, parent’s education, and parent’s race. | |||||||||
Child attributes that reduce susceptibility | |||||||||
Believes parent likes to talk about smoking | 51.7 | 59.3 | 41.6 | 2.09 | (1.44 to 3.02) | 0.00 | 1.52 | (1.10 to 2.10) | 0.01 |
Affirms having social contract with parent | 73.8 | 77.3 | 68.2 | 1.54 | (1.03 to 2.31) | 0.03 | 1.30 | (0.92 to 1.83) | 0.13 |
Believes parent would detect smoking | 84.4 | 88.3 | 80.5 | 1.84 | (1.10 to 3.06) | 0.01 | 1.36 | (0.89 to 2.04) | 0.14 |
Expects parent will reward abstinence | 36.4 | 38.6 | 28.2 | 1.55 | (1.06 to 2.25) | 0.02 | 1.41 | (1.01 to 1.98) | 0.04 |
Child attributes that raise susceptibility | |||||||||
Intends to smoke in adolescence | 10.4 | 8.5 | 16.1 | 0.54 | (0.31 to 0.95) | 0.03 | 0.60 | (0.37 to 0.95) | 0.03 |
Has a best friend who has smoked | 25.3 | 19.2 | 30.8 | 0.49 | (0.32 to 0.76) | 0.00 | 0.73 | (0.52 to 1.03) | 0.07 |