Table 3 Diagnostic performance of physicians with different levels of experience before and after CAD assistance.

From: A beneficial role of computer-aided diagnosis system for less experienced physicians in the diagnosis of thyroid nodule on ultrasound

 

CAD

Inexperienced

Experienced

Before (%)

After (%)

Pa

Pb

Before (%)

After (%)

Pa

Pb

Sensitivity

85.3

79.2

84.5

0.003

0.010

89.4

90.4

0.017

0.292

Specificity

63.6

48.6

53.8

 < 0.001

0.103

57.6

58.3

0.079

0.463

PPV

82.3

76.6

79.5

0.009

–

80.7

81.1

0.261

–

NPV

68.6

52.0

65.9

 < 0.001

–

73.1

75.2

0.133

–

Accuracy

78.0

68.9

74.2

 < 0.001

0.005

77.4

79.6

0.396

0.134

  1. ACR-TIRADS 4 was used as the cut-off to calculate the diagnostic performance of physicians. CAD, computer-aided diagnosis; Before, physicians before CAD assistance; After, physicians after CAD assistance. PPV, positive predictive value; NPV, negative predictive value.
  2. Pa, CAD vs. before; Pb, before vs. after.
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