| Value | Category | Cases | |
|---|---|---|---|
| 1 | 5.0 to 10.0 IS | 511 |
30.3%
|
| 2 | 10.1 to 15.0 IS | 89 |
5.3%
|
| 3 | 15.1 to 20.0 IS | 42 |
2.5%
|
| 4 | 20.1 to 25 IS | 17 |
1%
|
| 5 | More than 25.0 IS | 24 |
1.4%
|
| 6 | I don't know | 1005 |
59.5%
|
| Sysmiss | 26 |