| Value | Category | Cases | |
|---|---|---|---|
| 1 | TV | 404 |
31.2%
|
| 2 | Radio | 129 |
10%
|
| 3 | Pamphlets | 85 |
6.6%
|
| 4 | Posters | 16 |
1.2%
|
| 5 | Youth magazine | 220 |
17%
|
| 6 | Direct personal contact | 308 |
23.8%
|
| 7 | Seminars | 131 |
10.1%
|
| Sysmiss | 21 |