| Value | Category | Cases | |
|---|---|---|---|
| 1 | I did not see anyone smoking inside public transportation during the past 7 days | 1084 |
31.5%
|
| 2 | I used public transportation but no one smoked in my presence | 1136 |
33.1%
|
| 3 | 1 to 2 days | 625 |
18.2%
|
| 4 | 3 to 4 days | 166 |
4.8%
|
| 5 | 5 to 6 days | 130 |
3.8%
|
| 6 | 7 days | 296 |
8.6%
|
| Sysmiss | 37 |