| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Daily | 640 |
18.6%
|
| 2 | 2. Weekly | 1499 |
43.5%
|
| 3 | 3. Monthly | 534 |
15.5%
|
| 4 | 4. Occasionally | 770 |
22.4%
|
| Sysmiss | 966 |