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Table 4 Test Characteristics of AS, mAS, PAS, mPAS

From: Test characteristics of common appendicitis scores with and without laboratory investigations: a prospective observational study

AS

Score

Sensitivity

Specificity

PPV

NPV

Accuracy

mAS

Score

Sensitivity

Specificity

PPV

NPV

Accuracy

1

100.0

1.6

30.9

100.0

31.1

1

100.0

1.6

30.9

100

31.1

2

100.0

4.0

31.4

100.0

32.8

2

98.2

5.6

31.4

87.5

33.3

3

98.2

11.9

32.9

93.8

37.8

3

90.7

17.5

33.1

84.6

3.94

4

94.5

25.4

35.6

91.2

46.1

4

83.3

36.5

36.5

83.3

50.6

5

85.2

43.7

39.8

87.1

56.1

5

59.3

64.3

40.8

76.9

62.8

6

81.5

62.7

48.4

88.5

68.3

6

31.5

85.7

47.1

73.3

69.4

7

68.5

74.6

54.9

85.3

72.8

7

7.4

98.4

71.4

71.1

71.1

8

51.9

84.1

55.1

78.6

74.4

      

9

25.9

92.1

58.3

73.7

72.2

      

10

5.6

99.2

80.0

70.9

71.1

      

PAS

1

100.0

1.6

30.9

100.0

31.1

mPAS

1

100.0

2.4

31.1

100.0

31.1

2

100.0

4.8

31.6

100.0

33.3

2

98.2

5.6

31.4

87.5

33.3

3

98.2

12.7

33.5

94.7

38.3

3

94.5

17.5

34.0

88.9

40.6

4

90.8

23.0

34.7

86.1

43.3

4

87.0

30.2

36.1

85.1

47.2

5

90.8

38.9

39.7

90.7

54.4

5

77.8

50.8

41.2

82.1

58.9

6

81.5

56.4

44.4

86.4

63.9

6

64.8

68.3

46.7

81.0

67.2

7

68.5

72.2

50.7

83.2

71.1

7

29.6

84.9

44.1

72.6

68.3

8

55.6

85.7

61.7

80.4

76.7

8

9.3

96.0

50.0

70.6

70.0

9

25.9

92.1

56.0

73.6

72.2

      

10

7.4

96.8

50.0

70.4

70.0

      
  1. AS Alvarado Score, mAS modified Alvarado Score, PAS Pediatric Appendicitis Score, mPAS modified Pediatric Appendicitis Score, NPV Negative Predictive Value, PPV Positive Predictive Value
  2. Cut-off values with their respective test characterstics have been highlighted for each of the appendicitis scores assessed