| Value | Category | Cases | |
|---|---|---|---|
| 1 | Smoking | 62613 |
10.7%
|
| 2 | Not smoking | 283927 |
48.4%
|
| 3 | Refused to answer | 6846 |
1.2%
|
| 8 | Unknown | 435 |
0.1%
|
| 9 | Unspecified | 232205 |
39.6%
|