| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Not at all free | 32 |
2.7%
|
| 1 | Not very free | 128 |
10.7%
|
| 2 | Somewhat free | 407 |
33.9%
|
| 3 | Completely free | 549 |
45.8%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don’t know | 83 |
6.9%
|