| Value | Category | Cases | |
|---|---|---|---|
| 1 | In the past two days | 199 |
8.9%
|
| 2 | In the past week | 399 |
17.8%
|
| 3 | In the past month | 346 |
15.4%
|
| 4 | In the past 6 months | 45 |
2%
|
| 5 | Once or twice since leaving the program | 22 |
1%
|
| Sysmiss | 1231 |
54.9%
|