Table 3

 Determination of serum thiocyanate at the last examination, by category of smoking

Never smokersEx-smokersQuittersModerate smokersReducersHeavy smokersp Value†
*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.
Men (n = 5851)*
    Participants (n)1168103866613471391493
    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)2213643403174745579
    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