| Value | Category | Cases | |
|---|---|---|---|
| -97 | Refused | 0 |
0%
|
| 1 | I did not use public transportation during the past 30 days | 2790 |
59.7%
|
| 2 | I used public transportation but no one smoked in my presence | 936 |
20%
|
| 3 | 1 to 2 days | 225 |
4.8%
|
| 4 | 3 to 4 days | 110 |
2.4%
|
| 5 | 5 to 6 days | 67 |
1.4%
|
| 6 | 7 days | 31 |
0.7%
|
| 7 | More than tha 7 days | 125 |
2.7%
|
| 97 | 391 |
8.4%
|
