| Value | Category | Cases | |
|---|---|---|---|
| 1 | I did not use public transportation during the past 7 days | 789 |
38%
|
| 2 | I used public transportation but no one smoked in my presence | 1092 |
52.6%
|
| 3 | 1 to 2 days | 106 |
5.1%
|
| 4 | 3 to 4 days | 37 |
1.8%
|
| 5 | 5 to 6 days | 6 |
0.3%
|
| 6 | 7 days | 47 |
2.3%
|
| Sysmiss | 6 |