| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 45 |
1.3%
|
| 2 | Daily | 2 |
0.1%
|
| 3 | Weekly | 10 |
0.3%
|
| 4 | Monthly | 36 |
1.1%
|
| 5 | Never | 3244 |
97.2%
|
| Sysmiss | 2929 |