| Value | Category | Cases | |
|---|---|---|---|
| 1 | Day | 8423 |
81.1%
|
| 2 | Week | 169 |
1.6%
|
| 3 | Month | 1079 |
10.4%
|
| 4 | Less than one year | 242 |
2.3%
|
| 5 | One year or more | 469 |
4.5%
|
| Sysmiss | 61467 |