Table 3 Determination of serum thiocyanate at the last examination, by category of smoking.
| Never smokers | Ex‐smokers | Quitters | Moderate smokers | Reducers | Heavy smokers | p Value† | |
|---|---|---|---|---|---|---|---|
| Men (n = 5851)* | |||||||
| Participants (n) | 1168 | 1038 | 666 | 1347 | 139 | 1493 | |
| Mean (SD) serum thiocyanate (μmol/l) | 30.5 (15.7) | 28.7 (17.2) | 29.6 (18.0) | 65.2 (27.6) | 66.8 (28.1) | 75.8 (30.7) | 0.001 |
| Women (n = 5630)* | |||||||
| Participants (n) | 2213 | 643 | 403 | 1747 | 45 | 579 | |
| Mean (SD) serum thiocyanate (μmol/l) | 28.5 (13.4) | 31.8 (16.8) | 34.9 (19.5) | 76.2 (31.0) | 81.3 (33.4) | 91.0 (35.4) | 0.074 |
*Participants not reporting cardiovascular disease, diabetes or treatment for hypertension, or symptoms of angina pectoris or atherosclerosis obliterans.
†p Values represent differences between the reducers and the continuous heavy smokers.