| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Chest only | 43 |
21.5%
|
| 2 | Nose only | 101 |
50.5%
|
| 3 | Both | 45 |
22.5%
|
| 6 | Other | 0 |
0%
|
| 8 | Don't know | 11 |
5.5%
|
| Sysmiss | 2949 |