| Value | Category | Cases | |
|---|---|---|---|
| 1 | First quartile | 274 |
21.2%
|
| 2 | Second quartile | 278 |
21.5%
|
| 3 | Third quartile | 376 |
29.1%
|
| 4 | Fourth quartile | 293 |
22.6%
|
| 5 | Don't know | 67 |
5.2%
|
| 6 | Refused | 6 |
0.5%
|
| Sysmiss | 706 |