| Value | Category | Cases | |
|---|---|---|---|
| 1 | Chest Only | 142 |
46.6%
|
| 2 | Nose Only | 78 |
25.6%
|
| 3 | Both | 64 |
21%
|
| 6 | Other | 2 |
0.7%
|
| 8 | Don't Know | 19 |
6.2%
|
| Sysmiss | 16181 |