Table 3 Performance measures

Overall Performance

Measure

Mean

Lower 95%

Upper 95%

Sensitivity

77.12

76.56

77.68

Specificity

89.89

89.79

90

Positive Predictive Value

34.04

33.62

34.46

Negative Predictive Value

98.31

98.26

98.36

Stage-Stratified Performance

Measure

Mean

Lower 95%

Upper 95%

Stage 3

Sensitivity

50.41

49.89

50.94

Specificity

95.9

95.83

95.97

Positive Predictive Value

58.72

58.16

59.27

Negative Predictive Value

94.35

94.27

94.43

Stage 4

Sensitivity

67.82

66.39

69.25

Specificity

98.86

98.83

98.9

Positive Predictive Value

42.4

41.2

43.59

Negative Predictive Value

99.6

99.58

99.62

Stage 5

Sensitivity

60.62

57.68

63.56

Specificity

99.67

99.65

99.69

Positive Predictive Value

36.92

34.66

39.23

Negative Predictive Value

99.87

99.86

99.89