| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 9890 |
96.3%
|
| 2 | Daily | 43 |
0.4%
|
| 3 | Weekly | 20 |
0.2%
|
| 4 | Monthly | 242 |
2.4%
|
| 5 | Less than monthly | 74 |
0.7%
|
| Sysmiss | 38538 |