Number of subjects |
Mean age (years) | Mean number of cigarettes per day |
Mean (95% CI) serum thiocyanate adjusted for age (μmol/l) |
Mean (95% CI) serum thiocyanate adjusted for age and cigs/day (μmol/l) | |
Men | |||||
Education | |||||
Primary | 66 | 45.6 | 18.4 | 168.6 (156.2 to 181.0) | 164.1 (152.0 to 176.2) |
Apprenticeship | 249 | 41.4 | 15.5 | 158.2 (151.2 to 165.3) | 158.8 (152.0 to 165.7) |
Secondary | 110 | 42.6 | 14.6 | 148.2 (139.1 to 157.4) | 150.3 (141.1 to 159.2) |
University | 26 | 45.3 | 12.5 | 141.8 (120.7 to 162.9) | 147.6 (127.1 to 168.2) |
p for linear trend | – | – | – | 0.032 | 0.195 |
Women | |||||
Education | |||||
Primary | 93 | 41.7 | 10.1 | 152.9 (140.1 to 165.8) | 153.2 (141.3 to 65.1) |
Apprenticeship | 96 | 40.3 | 11.0 | 152.9 (139.0 to 165.8) | 152.0 (139.1 to 164.9) |
Secondary | 85 | 40.9 | 9.5 | 144.7 (133.0 to 156.4) | 147.1 (136.3 to 158.0) |
University | 8 | 43.8 | 10.4 | 149.4 (104.2 to 194.5) | 146.4 (104.5 to 188.2) |
p for linear trend | – | – | – | 0.51 | 0.851 |