| Value | Category | Cases | |
|---|---|---|---|
| 1 | Chest only | 104 |
34.8%
|
| 2 | Nose only | 124 |
41.5%
|
| 3 | Both | 61 |
20.4%
|
| 7 | Other | 3 |
1%
|
| 8 | Don't Know | 7 |
2.3%
|
| Sysmiss | 1153 |