Summary of responses to the question “Do you think smoking is a risk factor for multiple sclerosis?*
| Variables | Smoking Status† | P-value | ||
|---|---|---|---|---|
| Current Smoker | Ex-Smoker | Never-Smoker | ||
| Yes | 5 (8.9) | 10 (52.6) | 16 (19.3) | 0.001 |
| No | 25 (44.6) | 2 (10.5) | 25 (30.1) | |
| Does not know | 26 (46.4) | 7 (36.8) | 42 (50.6) | |
| *Data are presented as frequency (percent within the smoking status) unless otherwise specific. † Number missing=4 | ||||