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Figure 3 The prevalence of risk factors in the general population (open diamonds), in patients with sporadic premature coronary artery disease (P-CAD) (solid triangles) and in patients with familial P-CAD (solid circles), according to age tertiles. Groups and risk factors were defined as described in the legend to Figure 2. *p < 0.05 familial versus sporadic P-CAD; ***p < 0.001.