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Table 2 4AT accuracy in detecting delirium according to the cut-off point

From: Spanish transcultural adaptation of the 4AT score for the evaluation of delirium in the emergency department: a prospective diagnostic test accuracy study

Cut-off point

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

Youden index

1

100

45.51

11.01

100

0.45

2

100

72.19

19.51

100

0.72

3

100

84.83

30.78

100

0.85

4

95.83

92.98

47.92

99.7

0.89

5

79.17

95.22

52.78

98.55

0.74

6

75

95.79

54.55

98.27

0.71

7

58.33

97.47

60.87

97.2

0.56

8

54.17

98.31

68.42

96.95

0.52

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