| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 35 |
2.9%
|
| 2 | Not very free | 85 |
7.1%
|
| 3 | Somewhat free | 263 |
21.8%
|
| 4 | Completely free | 762 |
63.3%
|
| 9 | Don't know | 59 |
4.9%
|
| 998 | Refused | 0 |
0%
|