| Value | Category | Cases | |
|---|---|---|---|
| 1 | Day | 8922 |
84.8%
|
| 2 | Week | 161 |
1.5%
|
| 3 | Month | 782 |
7.4%
|
| 4 | Less than one year | 248 |
2.4%
|
| 5 | One year or more | 407 |
3.9%
|
| Sysmiss | 59904 |