| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 641 |
98.3%
|
| 2 | No : only a portion | 7 |
1.1%
|
| 3 | Not at all | 1 |
0.2%
|
| 997 | Don't know | 3 |
0.5%
|
| Sysmiss | 1229 |