| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 2 |
0.1%
|
| 2 | Weekly | 1 |
0%
|
| 3 | Monthly | 27 |
0.9%
|
| 4 | Never | 2869 |
99%
|
| Sysmiss | 1907 |