| Value | Category | Cases | |
|---|---|---|---|
| -1 | True missing | 5 |
0.1%
|
| 0 | No | 4506 |
82.2%
|
| 1 | Yes | 951 |
17.4%
|
| 98 | Don't know | 18 |
0.3%
|
| 99 | Refused to answer | 1 |
0%
|