Table 5 Prevalence of smoking last week (S) and/or cannabis use at some time (C) among alcohol-drinking and non-alcohol-drinking (last month) students in the survey of 2005 and 2009 in relation with gender, age and educational level (%)
| Â | Non-alcohol-drinking students | Alcohol-drinking students | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | No S, No C | S and/or C | No S, No C | S and/or C | ||||
| Â | 2005 | 2009 | 2005 | 2009 | 2005 | 2009 | 2005 | 2009 |
|  | N = 677 | N = 1,075 | N = 30 | N = 62 | N = 718 | N = 556 | N = 425 | N = 351 |
Total | 95.8 | 94.8b | 4.2 | 5.2b | 62.8 | 65.2b | 37.2 | 34.8b |
Gender | Â | Â | Â | Â | Â | Â | Â | Â |
 Boys | 95.5 | 92.9c | 4.5 | 7.1c | 61.0 | 57.1c | 39.0 | 42.9c |
 Girls | 96.0 | 97.0c | 4.0 | 3.0c | 64.7 | 72.9a c | 35.3 | 27.1a c |
Age (years) | Â | Â | Â | Â | Â | Â | Â | Â |
 13 | 98.9 | 97.5d | 1.1 | 2.5d | 81.4 | 77.4d | 18.6 | 22.6d |
 14 | 94.0 | 95.0d | 6.0 | 5.0d | 69.0 | 66.3d | 31.0 | 33.7d |
 15 | 90.3 | 91.0d | 9.7 | 9.0d | 58.0 | 63.4d | 42.0 | 36.6d |
 16 | 90.9 | 85.5d | 9.1 | 14.5d | 47.3 | 51.2d | 52.7 | 48.8d |
Level of education | Â | Â | Â | Â | Â | Â | Â | Â |
 Low VMBO | 93.1 | 93.0e | 6.9 | 7.0e | 55.2 | 58.3e | 44.8 | 41.7e |
 High HAVO/VWO | 97.4 | 96.2e | 2.6 | 3.8e | 68.7 | 71.0e | 31.3 | 29.0e |