| Value | Category | Cases | |
|---|---|---|---|
| 1 | Chest only | 201 |
36.4%
|
| 2 | Nose only | 195 |
35.3%
|
| 3 | Both | 133 |
24.1%
|
| 6 | Other | 20 |
3.6%
|
| 8 | Don't know | 3 |
0.5%
|
| Sysmiss | 36617 |