Characteristic | Binge drinking data | P value | |
Yes (n=787) | No* (n=506) | ||
Male (%) | 45.1 | 53 | 0.007 |
Age (year, mean (SD)) | 12.7 (0.5) | 12.9 (0.6) | <0.001 |
Mother university-educated (%) | 46.7 | 38.5 | 0.026 |
Single-parent family (%) | 8.3 | 10.9 | 0.16 |
French spoken at home (%) | 33 | 27.6 | 0.235 |
No. cigs/month (mean (SD)) | 7.2 (47.7) | 13.8 (73.5) | 0.087 |
Used alcohol at baseline (%) | 40.3 | 47.4 | 0.018 |
Parents smoke (%) | 35.2 | 44.6 | 0.001 |
Friends smoke (%) | 33.9 | 41.2 | 0.01 |
Depressive symptoms (mean (SD)) | 2.1 (0.6) | 2.1 (0.7) | 0.43 |
Impulsivity (mean (SD)) | 2.3 (0.9) | 2.4 (1.0) | 0.105 |
Novelty-seeking (mean (SD)) | 2.9 (0.8) | 3.0 (0.9) | 0.158 |
*Participants’ missing data on binge drinking at either age 20 or 24 were excluded from the analyses.