| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 54 |
4%
|
| 2 | Not very free | 99 |
7.3%
|
| 3 | Somewhat free | 439 |
32.5%
|
| 4 | Completely free | 452 |
33.5%
|
| 9 | Don't know | 306 |
22.7%
|
| 998 | Refused | 0 |
0%
|