| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | chest only | 308 |
35%
|
| 2 | nose only | 383 |
43.5%
|
| 3 | both | 172 |
19.5%
|
| 6 | other | 1 |
0.1%
|
| 8 | don't know | 16 |
1.8%
|
| Sysmiss | 10748 |