| Value | Category | Cases | |
|---|---|---|---|
| 1 | Monthly | 176 |
32.2%
|
| 2 | Quarterly | 302 |
55.3%
|
| 3 | Bi-Qurterly | 4 |
0.7%
|
| 4 | Half yearly | 16 |
2.9%
|
| 5 | Yearly | 5 |
0.9%
|
| 6 | Never | 43 |
7.9%
|
| Sysmiss | 1 |