| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 25 |
0.9%
|
| 2 | Weekly | 53 |
1.9%
|
| 3 | Monthly | 334 |
11.7%
|
| 4 | Never | 2448 |
85.6%
|
| Sysmiss | 1946 |