| Characteristics | Frequency | |
|
| Number | % |
| Have you ever chewed khat Yes No |
151 209 |
41.9 58.1 |
| Have you ever smoked chewed or sniffed any tobacco product Yes No |
161 199 |
44.7 55.3 |
| Have you ever drunk any alcoholic beverage Yes No |
162 198 |
45 55 |
| Have you ever taken glue Yes No |
92 268 |
25.6 74.4 |
| Have you ever taken any cannabis Yes No |
60 300 |
16.7 83.3 |