School level effects | | | |
Percentage current smokers | 1.00 (0.98 to 1.01) | 0.99 (0.97 to 1.01) | 1.00 (0.98 to 1.02) |
*School prevention programme | 1.01 (0.75 to 1.36) | 1.15 (0.98 to 1.34) | 0.97 (0.80 to 1.18) |
Individual level effects | | | |
†Sex | 1.05 (0.83 to 1.33) | 0.74 (0.63 to 0.87) | 0.77 (0.63 to 0.94) |
Age (years) | 0.92 (0.85 to 0.99) | 0.84 (0.80 to 0.89) | 1.03 (0.95 to 1.11) |
‡African American | 0.90 (0.64 to 1.29) | 1.12 (0.90 to 1.38) | 0.44 (0.34 to 0.59) |
§Hispanic | 1.65 (1.25 to 2.16) | 1.75 (1.47 to 2.09) | 0.75 (0.60 to 0.93) |
Amount smoked | — | 1.43 (1.38 to 1.49) | 1.45 (1.37 to 1.54) |
Household smoking | 1.30 (1.03 to 1.64) | 0.98 (0.84 to 1.15) | 1.17 (0.96 to 1.43) |
Number of friends who smoke | 1.52 (1.41 to 1.65) | 1.32 (1.25 to 1.40) | 1.31 (1.24 to 1.39) |
Tolerance for smoking related deviance | 1.39 (1.33 to 1.45) | 1.27 (1.22 to 1.32) | 1.14 (1.10 to 1.18) |
Threat of licence suspension | 1.11 (0.77 to 1.62) | 1.00 (0.82 to 1.22) | 0.70 (0.57 to 0.88) |
Vicarious MIP citation | 2.13 (1.69 to 2.17) | 1.01 (0.86 to 1.18) | 1.12 (0.92 to 1.36) |
MIP citation | — | 1.07 (0.70 to 1.65) | 0.70 (0.47 to 1.07) |
Tolerance × threat of licence suspension | 1.15 (1.04 to 1.27) | NA | NA |
Tolerance × vicarious MIP citation | 1.17 (1.09 to 1.27) | 0.92 (0.87 to 0.98) | NA |