Table 5 Predictors of p30-day cigarette smoking intensity trajectory class membership
| Â | Class (Reference: Class 2: Gradual quitter) | Model 1: Odds Ratio (95% CI)a | Model 2: Odds Ratio (95% CI)b |
|---|---|---|---|
Female | 1 (Persistent Non-smoker) | 1.08 (0.99, 1.18) | 1.07 (0.94, 1.21) |
3 (Progressing Smoker) | 0.75 (0.68, 0.84) | 0.74 (0.64, 0.86) | |
Race (reference = White) | |||
 Non-Hispanic Black | 1 (Persistent Non-smoker) | 7.64 (6.36, 9.19) | 7.32 (5.54, 9.66) |
3 (Progressing Smoker) | 5.02 (4.12, 6.12) | 4.86 (3.61, 6.53) | |
 Hispanic | 1 (Persistent Non-smoker) | 2.79 (2.43, 3.19) | 2.21 (1.80, 2.71) |
3 (Progressing Smoker) | 1.09 (0.91, 1.29) | 0.97 (0.75, 1.25) | |
 Others | 1 (Persistent Non-smoker) | 1.81 (1.56, 2.10) | 1.70 (1.33, 2.17) |
3 (Progressing Smoker) | 1.13 (0.94, 1.36) | 1.43 (1.00, 1.32) | |
Parent graduated from high school or above | 1 (Persistent Non-smoker) | 1.58 (1.44, 1.73) | 1.15 (1.00, 1.32) |
3 (Progressing Smoker) | 1.04 (0.94, 1.17) | 0.93 (0.79, 1.09) | |
Parental baseline income (reference = first quartile) | |||
 50%+ | 1 (Persistent Non-smoker) | 1.29 (1.14, 1.45) | 0.98 (0.83, 1.16) |
3 (Progressing Smoker) | 0.99 (0.86, 1.14) | 0.89 (0.74, 1.08) | |
 75%+ | 1 (Persistent Non-smoker) | 1.52 (1.35, 1.72) | 0.99 (0.83, 1.18) |
3 (Progressing Smoker) | 0.93 (0.80, 1.07) | 0.75 (0.61, 0.91) | |
Presence of smoker in the household | 1 (Persistent Non-smoker) | 0.25 (0.22, 0.28) | 0.30 (0.27, 0.35) |
3 (Progressing Smoker) | 0.58 (0.51, 0.65) | 0.61 (0.52, 0.72) | |
Knows everyone in the neighborhood | 1 (Persistent Non-smoker) | 0.90 (0.82, 0.99) | 0.83 (0.71, 0.96) |
3 (Progressing Smoker) | 1.33 (1.18, 1.50) | 1.22 (1.02, 1.46) | |
Feel happy about present neighborhood | 1 (Persistent Non-smoker) | 1.56 (1.35, 1.80) | 1.40 (1.12, 1.76) |
3 (Progressing Smoker) | 1.25 (1.05, 1.49) | 1.28 (0.98, 1.67) | |
Perceived care from adults | 1 (Persistent Non-smoker) | 1.54 (1.22, 1.94) | 1.11 (0.76, 1.62) |
3 (Progressing Smoker) | 1.34 (1.02, 1.77) | 1.14 (0.73, 1.77) | |
Perceived care from teachers | 1 (Persistent Non-smoker) | 2.84 (2.54, 3.18) | 2.29 (1.92, 2.73) |
3 (Progressing Smoker) | 1.61 (1.41, 1.85) | 1.60 (1.30,1.96) | |
Perceived care from friends | 1 (Persistent Non-smoker) | 0.99 (0.72, 1.37) | 0.75 (0.45, 1.26) |
3 (Progressing Smoker) | 0.82 (0.57, 1.17) | 0.69 (0.39, 1.23) | |
Feel close to others at school | 1 (Persistent Non-smoker) | 1.78 (1.54, 2.06) | 1.03 (0.84, 1.27) |
3 (Progressing Smoker) | 1.35 (1.14, 1.61) | 1.01 (0.79, 1.28) | |
Feel as part of the school | 1 (Persistent Non-smoker) | 2.35 (2.05, 2.70) | 1.82 (1.50, 2.22) |
3 (Progressing Smoker) | 1.57 (1.34, 1.86) | 1.32 (1.05, 1.65) | |