Table 1.

Descriptive statistics and hazard ratios of CHD in the Reykjavik prospective cohort study

		Hazard ratio (95% CI) for CHD per 1 standard deviation higher value or in comparison with reference category*
	Mean (SD) or n (%)	Model 1	Model 2
Age at survey (years)	52.3 (7.6)	1.68 (1.60, 1.77)	1.65 (1.57, 1.74)
Smoking status (smoker vs non-smoker)*	3,609 (53.3)	1.54 (1.40, 1.70)	1.51 (1.37, 1.66)
Systolic blood pressure (mmHg)	141.8 (20.6)	1.22 (1.17, 1.28)	1.22 (1.17, 1.28)
Total cholesterol (mmol/l)	6.3 (1.0)	1.31 (1.26, 1.37)	1.27 (1.22, 1.33)
HDL-cholesterol (mmol/l)	1.4 (0.2)		0.80 (0.76, 0.85)

Hazard ratios are based on a Cox proportional hazards model involving 6773 men (1827 events) with information on all risk factors, and using time from study entry as the time scale.

*reference category for smoking is non-smokers.