Table 2 Distribution of the measured confounders and smoking rates during the initial study in the intervention group and the control group*
From: Long-term effectiveness of adolescent brief tobacco intervention: a follow-up study
| Â | Control group | Intervention group | ||
|---|---|---|---|---|
| Â | n | % of group | n | % of group |
Gender | Â | Â | Â | Â |
   Female | 295 | 60.1 | 310 | 58.6 |
   Male | 196 | 39.9 | 219 | 41.4 |
Marital status | Â | Â | Â | Â |
   Single | 119 | 24.2 | 129 | 24.4 |
   Married or cohabiting | 372 | 75.8 | 400 | 75.6 |
Education | Â | Â | Â | Â |
   Lower | 171 | 35.1 | 177 | 33.7 |
   Higher | 316 | 64.9 | 348 | 66.3 |
Self-perceived health | Â | Â | Â | Â |
   Very good | 144 | 29.4 | 139 | 26.3 |
   Other | 345 | 70.6 | 390 | 73.7 |
Smoking rate | Â | Â | Â | Â |
   In 1992 | 30 | 6.1 | 18 | 3.4 |
   In 1993 | 44 | 8.9 | 45 | 8.6 |