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Figure 2 The receiver-operator characteristic curve showing the sensitivity (x-axis) and 1-specificity (y-axis) of the different cutoff points for the number of segments with MV that needed to be revascularized in order to demonstrate a survival benefit. a = 0 segments, b =  2 versus  3 segments; c = 4 versus 5 segments; d = 5 versus 6 segments; e = 6 versus 7 segments; f = 7 versus 8 segments; g = 8 versus 9 segments; h = 9 versus 10 segments; i = 10 versus 11 segments; j = 11 versus segments; and k = 12 segments.
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