Figure 1.

Crude and adjusted (adjusted for age, clinic, body mass index, diabetes, smoking, high density lipoprotein cholesterol, total cholesterol, systolic blood pressure, and use of lipid-/blood-pressure-lowering medications) hazard ratios for coronary heart disease according to quintile of free protein S level (corrected for regression dilution bias), Second Northwick Park Heart Study, United Kingdom, 1989–2005. The hazard ratio of 1 (dashed line) represents the reference group. Bars, 95% confidence interval.