| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 343 |
9.7%
|
| 1 | Once an hour or more often | 1459 |
41.3%
|
| 2 | Once a day | 1197 |
33.9%
|
| 3 | Once a month | 273 |
7.7%
|
| 4 | Less than once a month | 262 |
7.4%
|
| Sysmiss | 11343 |