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Table 4 Accuracy of echo parameters for the determinants of LAA thrombus in 140 persistent AF patients with a low CHADS2 score (≤1)

From: Motion of left atrial appendage as a determinant of thrombus formation in patients with a low CHADS2 score receiving warfarin for persistent nonvalvular atrial fibrillation

Cutoff values Sensitivity Specificity PPV NPV
LAAPV (≤ 24 cm/sec) 73 (66–80) 75 (68–82) 26 (18–33) 96 (92–99)
LAAEF (≤ 21%) 93 (89–97) 96 (92–99) 74 (67–81) 99 (97–100)
  1. Data are percentages. Numbers in parentheses are 95% confidence intervals. PPV: positive predictive value. NPV: negative predictive value. Other abbreviations as in Table1.