| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 3486 |
86.9%
|
| 2 | Occasionally but less than once a month | 378 |
9.4%
|
| 3 | More than once a month but less than once a week | 70 |
1.7%
|
| 4 | More than once a week but less than once a day | 45 |
1.1%
|
| 5 | Everyday | 31 |
0.8%
|
| Sysmiss | 61 |