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Table 2 Accuracy statistics for the fractal method and comparator CMR criteria.

From: Quantification of left ventricular trabeculae using fractal analysis

Accuracy statistic*

Max. Apical FD

Global LV FD

Perimetry

Petersen

Jacquier

Sensitivity (95% CI, UL-LL)

100 (88–100)

83 (61–92)

70 (48–85)

70 (46–87)

95 (73–100)

Specificity (95% CI, UL-LL)

100 (97–100)

86 (78–92)

91 (86–97)

98 (85–100)

53 (36–68)

PPV (95% CI, UL-LL)

100 (88–100)

63 (46–78)

72 (50–87)

93 (66–100)

50 (34–66)

NPV (95% CI, UL-LL)

100 (97–100)

94 (86–97)

92 (85–96)

87 (72–94)

95 (75–100)

  1. *Sensitivity, specificity, PPV and NPV values are quoted as %.
  2. CI = confidence interval; LL = lower limit; NPV = negative predictive value; PPV = positive predictive value; UL = upper limit; other abbreviations as in Table 1.