| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 122 |
13.2%
|
| 2 | 1-2 months | 319 |
34.4%
|
| 3 | 3-5 months | 183 |
19.7%
|
| 4 | 6-11 months | 119 |
12.8%
|
| 5 | 1-2 years | 115 |
12.4%
|
| 6 | 3 years or more | 69 |
7.4%
|
| Sysmiss | 52006 |