| Value |
Category |
| 1 |
Blocked nose |
| 2 |
Problem in chest |
| 3 |
Both |
| 4 |
Other |
| 7 |
Missing |
| 9 |
Don't know |
| 99 |
|
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
