| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 19 |
1.6%
|
| 2 | Not very free | 17 |
1.4%
|
| 3 | Somewhat free | 217 |
18%
|
| 4 | Completely free | 944 |
78.1%
|
| 9 | Don't know | 11 |
0.9%
|
| 998 | Refused | 0 |
0%
|