| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 44 |
3.6%
|
| 2 | Every two weeks | 189 |
15.5%
|
| 3 | Monthly | 956 |
78.3%
|
| 4 | Every 6 months | 3 |
0.2%
|
| 555 | Others Specify | 29 |
2.4%
|
| Sysmiss | 2391 |