| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 1657 |
40.7%
|
| 1 | Yes, took no drug | 1967 |
48.3%
|
| 8 | Don't know | 448 |
11%
|
| 9 | 10 | ||
| Sysmiss | 18452 |