| Value | Category | Cases | |
|---|---|---|---|
| 1 | chest only | 94 |
13.3%
|
| 2 | nose only | 561 |
79.2%
|
| 3 | both | 36 |
5.1%
|
| 6 | other | 13 |
1.8%
|
| 8 | don't know | 4 |
0.6%
|
| Sysmiss | 30112 |