| Nagelkerke R2 - Change | Reference Class |  | OR (95% CI) |
---|---|---|---|---|
Step 1 | 0.159 | Â | Â | Â |
Sex | Â | Class 1 | Class 2 | 1.04 (.66-1.63) |
 |  | Class 2 | Class 3 | 0.70 (.43-1.15) |
 |  | Class 3 | Class 4 | 1.17 (.71-1.93) |
Education | Â | Class 1 | Class 2 | 0.74*** (.65-.83) |
 |  | Class 2 | Class 3 | 1.01 (.89-1.05) |
 |  | Class 3 | Class 4 | 1.04 (.90-1.19) |
Age of initiation | Â | Class 1 | Class 2 | 1.02 (.94-1.11) |
 |  | Class 2 | Class 3 | 0.96 (.73-1.26) |
 |  | Class 3 | Class 4 | 1.04 (.81-1.33) |
Smoking frequency | Â | Class 1 | Class 2 | .99 (.75-1.33) |
 |  | Class 2 | Class 3 | .96 (.73-1.26) |
 |  | Class 3 | Class 4 | 1.04 (.81-1.33) |
Smoking quantity | Â | Class 1 | Class 2 | 1.93 (.61-6.10) |
 |  | Class 2 | Class 3 | 1.49 (.56-4.01) |
 |  | Class 3 | Class 4 | 1.19 (.51-2.77) |
Step 2 | 0.010 | Â | Â | Â |
Extraversion | Â | Class 1 | Class 2 | 0.87 (.67-1.13) |
 |  | Class 2 | Class 3 | 1.07 (.81-1.43) |
 |  | Class 3 | Class 4 | 1.18 (.87-1.58) |
Neuroticism | Â | Class 1 | Class 2 | 1.16 (.90-1.51) |
 |  | Class 2 | Class 3 | 0.88 (.66-1.17) |
 |  | Class 3 | Class 4 | 1.13 (.85-1.51) |
Step 3 | 0.035 | Â | Â | Â |
Smoking mother | Â | Class 1 | Class 2 | 1.95* (1.17-3.26) |
 |  | Class 2 | Class 3 | 2.25** (1.30-3.87) |
 |  | Class 3 | Class 4 | 1.34 (.79-2.25) |
Smoking friends | Â | Class 1 | Class 2 | 1.47** (1.12-1.94) |
 |  | Class 2 | Class 3 | .98 (.74-1.31) |
 |  | Class 3 | Class 4 | .94 (.70-1.25) |
Step 4a | 0.010 | Â | Â | Â |
Interaction Extraversion × Smoking friends |  | Class 1 | Class 2 | 1.48** (1.13-1.96) |
Step 4b | 0.011 | Â | Â | Â |
Interaction Extraversion × Smoking mother |  | Class 3 | Class 4 | 1.79* (1.08-2.97) |