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Figure 1 Box and whisker plot of the distribution of coronary calcium scores for patients with angiographically normal coronary arteries (n = 98), angiographic nonobstructive coronary disease (n = 76) or angiographic obstructive disease (n = 116). The horizontal line inside the rectangular segment of each box denotes the median value for each category of disease. The lower and upper edges of the rectangular segment represent the 25th and 75th percentiles of the distribution of calcium scores and the flared ends of each box represent the 10th and 90th percentiles. The whiskers encompass the entire range of each population.
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