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Table 2 Confusion matrices for the classification of 4 groups with ODI used as predictor for two datasets containing 616 and 540 samples, respectively

From: Validation of overnight oximetry to diagnose patients with moderate to severe obstructive sleep apnea

 

N

Normal

Mild

Moderate

Severe

Sensitivity (%)

Dataset 1

      

Normal

72

53

10

1

0

73.61

Mild

127

25

80

20

2

62.99

Moderate

132

3

48

55

26

41.67

Severe

285

1

11

22

251

88.07

Total Validation

616

Overall accuracy: 71.27%

Dataset 2

      

Normal

68

51

17

0

0

75.00

Mild

121

21

85

14

1

70.25

Moderate

114

3

39

53

19

46.49

Severe

237

0

10

19

208

87.76

Total Validation

540

Overall accuracy: 73.52%

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BMC Pulmonary Medicine

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