| Value | Category | Cases | |
|---|---|---|---|
| 1 | Chest only | 212 |
41.1%
|
| 2 | Nose only | 195 |
37.8%
|
| 3 | Both | 98 |
19%
|
| 6 | Other | 5 |
1%
|
| 8 | Don't know | 6 |
1.2%
|
| Sysmiss | 7928 |