| Value | Category | Cases | |
|---|---|---|---|
| 1 | no | 172 |
30.1%
|
| 2 | oral weekly | 13 |
2.3%
|
| 3 | oral monthly | 26 |
4.5%
|
| 4 | written < month | 8 |
1.4%
|
| 5 | written, 1-11 | 10 |
1.7%
|
| 6 | written 1yr | 81 |
14.2%
|
| 7 | written perm | 242 |
42.3%
|
| 8 | other | 20 |
3.5%
|
| 9 | not applicable/miss | 0 |
0%
|
| Sysmiss | 1037 |