| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 174 |
6.5%
|
| 2 | Once | 318 |
11.9%
|
| 3 | Few times | 1075 |
40.3%
|
| 4 | Many times | 1100 |
41.2%
|
| Sysmiss | 17333 |