Model 1 AUC: 0.72 95% CI: 0.66, 0.78

Model 2 AUC: 0.74 95% CI: 0.68, 0.80

Model 3 AUC: 0.72 95% CI: 0.66, 0.78

Scale cutoff

Sensitivity

Specificity

Sensitivity

Specificity

Sensitivity

Specificity

≥2

91.2%

19.1%

85.3%

46.0%

91.2%

17.3%

≥3

81.4%

44.2%

62.8%

74.6%

84.3%

41.5%

≥4

68.6%

70.4%

47.1%

85.2%

70.6%

66.3%

≥5

46.1%

83.2%

22.6%

93.7%

51.0%

79.9%

≥6

31.4%

94.0%

11.8%

98.0%

35.3%

91.0%

Scale cutoff

PPV

NPV

PPV

NPV

PPV

NPV

≥2

22.4%

89.4%

28.8%

92.4%

22.0%

88.5%

≥3

27.2%

90.3%

38.8%

88.7%

27.0%

91.2%

≥4

37.2%

89.7%

44.9%

86.3%

35.0%

89.8%

≥5

41.2%

85.8%

47.9%

82.5%

39.4%

86.4%

≥6

57.1%

84.2%

60.0%

81.3%

50.0%

84.6%