| Value | Category | Cases | |
|---|---|---|---|
| 1 | Chest only | 246 |
37%
|
| 2 | Nose only | 272 |
40.9%
|
| 3 | Both | 135 |
20.3%
|
| 6 | Other | 3 |
0.5%
|
| 8 | Don't know | 9 |
1.4%
|
| 9 | 2 | ||
| Sysmiss | 8128 |