| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | chest only | 61 |
13.4%
|
| 2 | nose only | 321 |
70.7%
|
| 3 | both | 59 |
13%
|
| 6 | other | 4 |
0.9%
|
| 8 | don't know | 9 |
2%
|
| Sysmiss | 17205 |