Table 2 Pearson and Spearman correlations among control variables, personality traits, mother's and friends' smoking, and nicotine dependence profiles (N = 796)
| Â | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
1. Sex | _ | Â | Â | Â | Â | Â | Â | Â | Â |
2. Education | -.05 | _ | Â | Â | Â | Â | Â | Â | Â |
3. Age of initiation | -.01 | .19*** | _ | Â | Â | Â | Â | Â | Â |
4. Smoking frequency | .05 | -.15*** | -.25*** | _ | Â | Â | Â | Â | Â |
5. Smoking quantity | .05 | -.17*** | -.23*** | .58*** | _ | Â | Â | Â | Â |
6. Extraversion | .04 | .13*** | -.00 | .06 | .01 | _ | Â | Â | Â |
7. Neuroticism | .07 | -.04 | -.02 | -.01 | -.01 | -.51*** | _ | Â | Â |
8. Smoking mother | .05 | -.28*** | -.12** | .18*** | .14*** | .02 | .01 | _ | Â |
9. Smoking friends | .10** | -.17*** | -.22*** | .55*** | .53*** | .03 | -.05 | .14*** | _ |
10. Nicotine dependence profiles | -.00 | -.30*** | -.36*** | .25*** | .26*** | -.02 | .06** | .17*** | .24*** |