| Value | Category | Cases | |
|---|---|---|---|
| 1 | A week or less | 102 |
38.5%
|
| 2 | More than a week but less than a month | 28 |
10.6%
|
| 3 | One to six months | 22 |
8.3%
|
| 4 | Seven to eleven months | 6 |
2.3%
|
| 5 | One to five years | 67 |
25.3%
|
| 6 | More than 5 years | 40 |
15.1%
|
| Sysmiss | 8458 |