| Value |
Category |
| 1 - 4 days |
|
| 16 - 24 days |
|
| 25 - 30 days |
|
| 5 - 8 days |
|
| 9 - 15 days |
|
| I have not been exposed to cigarettes smoking in the last 30 days |
|
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.