| Value | Category | Cases | |
|---|---|---|---|
| 1 | More comfortable | 201 |
11.2%
|
| 2 | Less comfortable | 1119 |
62.3%
|
| 3 | No difference from non-smokers | 73 |
4.1%
|
| 4 | I don't know | 402 |
22.4%
|
| Sysmiss | 35 |