| Value | Category | Cases | |
|---|---|---|---|
| 1 | a. One month | 3908 |
95.3%
|
| 2 | b. 3 months | 7 |
0.2%
|
| 3 | c. 6 months | 4 |
0.1%
|
| 4 | d. 12 months | 177 |
4.3%
|
| 5 | e. Others (Specify) | 5 |
0.1%
|
| Sysmiss | 867 |