Figure 1.

Estimations of the odds ratio of developing acute coronary syndromes, among non-smokers who are exposed to passive smoking and who had one-to-five additional cardiovascular risk factors (hypertension, hypercholesterolemia, diabetes mellitus, sedentary life and family history of premature coronary heart disease); the (exponential) line illustrates the trend on the odds ratios by level of risk factors (p-value for trend < 0.001)