| Value | Category | Cases | |
|---|---|---|---|
| 1 | In the past two days | 228 |
10.2%
|
| 2 | In the past week | 318 |
14.2%
|
| 3 | In the past month | 231 |
10.3%
|
| 4 | In the past 6 months | 39 |
1.7%
|
| 5 | Once or twice since leaving the program | 14 |
0.6%
|
| Sysmiss | 1412 |
63%
|