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Table 5 Results of linear discriminant analyses and systematic searches for the ITT-L group

From: Rapid point-of-care detection of SARS-CoV-2 infection in exhaled breath using ion mobility spectrometry: a pilot study

Site

Method

Parameters

Sensitivity (%)

Specificity (%)

Accuracy (%)

Youden index (%)

TUM

linear discriminant analyses

10 Peaks

74.7

55.5

65.0

30.2

TUM

systematic search

16 factors

77.9

67.7

72.8

45.6

CBF

linear discriminant analyses

8 Peaks

68.8

53.8

60.6

22.6

CBF

systematic search

14 factors

87.5

79.5

83.1

67.0

Total

linear discriminant analyses

11 Peaks

73.7

51.5

62.4

25.2

Total

systematic search

16 factors

77.4

67.0

72.1

44.4

  1. Linear discriminant analyses and systematic searches were performed as described in “Data Analysis and statistics” section. Youden Index = sensitivity + specificity − 1