| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 0 |
0%
|
| -888 | -888 | 1 |
0.1%
|
| 1 | Daily | 2 |
0.3%
|
| 2 | Weekly | 23 |
3.4%
|
| 3 | Montly | 231 |
33.8%
|
| 4 | Bi-monthly | 33 |
4.8%
|
| 5 | Quarterly | 72 |
10.5%
|
| 6 | Yearly | 32 |
4.7%
|
| 7 | Once a while | 290 |
42.4%
|
| Sysmiss | 2928 |