TABLE 2

Summary of Results Comparing Presence of Apical Artifacts with Clinical Correlates

Clinical correlates against presence of apical artifactsAssociation and Pearson χ2 valueP value, Fisher exact test
Female sexPositive, 32.7P < 0.001
Degree of overlying soft-tissuesPositive, 19.5P < 0.002
Presence of breast cleavagePositive, 7.15P < 0.008
Angiography-confirmed CADNegative, 6.88P < 0.02
Elevated cardiac risk (>10% at 10 y)Negative, 14.6P < 0.0001