Table 2 Detection of AHI psg greater than 30 versus different thresholds of AHIas, at 3 month follow-up.

From: Validation of an apnea and hypopnea detection algorithm implemented in implantable cardioverter defibrillators. The AIRLESS study

AHI as, thresholds

TP: AHI psg > 30 and AHI as >threshold

FP: AHI psg ≤ 30 and AHI as >threshold

FN: AHI psg ≥ 30 and AHI as ≤thrshold

TN: AHI psg ≤ 30 and AHI as ≤threshold

Se

Sp

PPV

NPV

10

8

17

0

0

100,0

0,0

32,0

/

15

8

9

0

8

100,0

47,1

47,1

100,0

20

8

6

0

11

100,0

64,7

57,1

100,0

25

8

6

0

11

100,0

64,7

57,1

100,0

30

8

4

0

13

100,0

76,5

66,7

100,0

35

7

2

1

15

87,5

88,2

77,8

93,8

40

5

2

3

15

62,5

88,2

71,4

83,3

45

0

2

8

15

0,0

88,2

0,0

65,2

50

0

2

8

15

0,0

88,2

0,0

65,2

55

0

0

8

17

0,0

100,0

/

68,0

  1. Abbreviations: TP: true positive; FP: false positive; FN: false negative; TN: true negative; Se: sensitivity; Sp: specificity; PPV: positive predictive value; NPV: negative predictive value.
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