| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Chest only | 33 |
20.9%
|
| 2 | Nose only | 81 |
51.3%
|
| 3 | Both | 34 |
21.5%
|
| 6 | Other | 0 |
0%
|
| 8 | Don't know | 10 |
6.3%
|
| Sysmiss | 5171 |