| Value | Category | Cases | |
|---|---|---|---|
| 1 | Chest only | 23 |
60.5%
|
| 2 | Nose only | 9 |
23.7%
|
| 3 | Both | 6 |
15.8%
|
| 7 | Other | 0 |
0%
|
| 8 | Don't know | 0 |
0%
|
| Sysmiss | 386 |