| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 20 |
1.7%
|
| 2 | Not very free | 64 |
5.3%
|
| 3 | Somewhat free | 328 |
27.2%
|
| 4 | Completely free | 785 |
65%
|
| 9 | Don't know | 11 |
0.9%
|
| 998 | Refused | 0 |
0%
|