| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | chest only | 70 |
13.6%
|
| 2 | nose only | 358 |
69.8%
|
| 3 | both | 68 |
13.3%
|
| 6 | other | 4 |
0.8%
|
| 8 | don't know | 13 |
2.5%
|
| Sysmiss | 11830 |