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Figure 5 Percentage of patients with obstructive coronary disease as a function of the number of risk factors and the coronary calcium score. Solid bars refer to patients with calcium scores 170; open bars refer to patients with calcium scores <170. Numbers at the top of each bar refer to the number of patients in each group. No patient with obstructive disease had no risk factors. Interpretation as in Figure 2. p < 0.001.