| Value | Category | Cases | |
|---|---|---|---|
| 1 | A week or less | 80 |
46.2%
|
| 2 | More than a week but less than a month | 14 |
8.1%
|
| 3 | One to six months | 20 |
11.6%
|
| 4 | Seven to eleven months | 7 |
4%
|
| 5 | One to five years | 45 |
26%
|
| 6 | More than 5 years | 7 |
4%
|
| Sysmiss | 14578 |