| Value | Category | Cases | |
|---|---|---|---|
| 1 | Chest only | 295 |
41.4%
|
| 2 | Nose only | 268 |
37.6%
|
| 3 | Both | 137 |
19.2%
|
| 6 | Other | 7 |
1%
|
| 8 | Don't know | 6 |
0.8%
|
| Sysmiss | 21821 |