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Figure 1 Bar graphs for the coronary change score (left panel) and for the categorical end points (right panel) for all lesions in the intravascular ultrasound (IVUS)-related (instrumented) and non-IVUS (control) coronary arteries. *To assess statistical significance for the rates of categorical end points, patients with both evaluable IVUS-related coronary arteries and evaluable non-IVUS arteries were taken and McNemar tests were done (see text). Solid bars = IVUS-related arteries (instrumented); ruled bars = non-IVUS arteries (control).