| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 6 |
0.6%
|
| -8 | dont know | 0 |
0%
|
| -7 | na | 0 |
0%
|
| 1 | rarely (1-2 times) | 449 |
45.6%
|
| 2 | sometimes (3-10 times) | 401 |
40.8%
|
| 3 | often (more than 10 times) | 128 |
13%
|
| Sysmiss | 1042 |