| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Chest only | 69 |
11.4%
|
| 2 | Nose only | 329 |
54.3%
|
| 3 | Both | 200 |
33%
|
| 6 | Other | 3 |
0.5%
|
| 8 | Don't know | 5 |
0.8%
|
| Sysmiss | 14438 |