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Table 2 Threshold results in combination with the 5WT clinical threshold (9) which maximizes the specificity for a sensitivity of at least 95%

From: Validation study of “Santé-Cerveau”, a digital tool for early cognitive changes identification

 

Optimal threshold

Sensibility

Specificity

Positive predictive value

Negative predictive value

NCT good answers

15.0 ± 2.4

95.4 ± 3.8

80.5 ± 8.7

84.6 ± 6.7

95.1 ± 6.32

NCT total

17.6 ± 3.8

95.3 ± 6.2

76.9 ± 9.7

80.9 ± 5.6

95.3 ± 6.2

NCT wrong answers

4.4 ± 1.9

95.4 ± 3.8

60.1 ± 17.8

71.4 ± 9.3

94.1 ± 4.9

TMT A time

49.4 ± 11.5

95.1 ± 6.6

67.7 ± 11.3

74.8 ± 5.9

94.5 ± 7.2

TMT B time

109.2 ± 13.2

95.4 ± 6.15

72.3 ± 7.84

77.7 ± 4.3

95.1 ± 6.3

TMT B-A time

68.8 ± 23.1

95.1 ± 6.6

70.8 ± 8.9

76.8 ± 4.9

94.7 ± 6.6

  1. Values obtained on the test samples, mean (standard deviation)
  2. Abbreviations: NCT Number Coding Test, TMT Trail Making Test