| Value | Category | Cases | |
|---|---|---|---|
| 1 | TV | 850 |
31.8%
|
| 2 | Radio | 130 |
4.9%
|
| 3 | Pamphlets | 170 |
6.4%
|
| 4 | Posters | 40 |
1.5%
|
| 5 | Youth magazine | 321 |
12%
|
| 6 | Direct personal contact | 664 |
24.8%
|
| 7 | Seminars | 501 |
18.7%
|
| Sysmiss | 126 |