| Value | Category | Cases | |
|---|---|---|---|
| 1 | chest only | 82 |
13.1%
|
| 2 | nose only | 500 |
80.1%
|
| 3 | both | 27 |
4.3%
|
| 6 | other | 12 |
1.9%
|
| 8 | don't know | 3 |
0.5%
|
| Sysmiss | 14010 |