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Table 2 Sensitivity and specificity of ratioscore and SVM methods

From: Using biomarkers to predict progression from clinically isolated syndrome to multiple sclerosis

   

Ratioscore

SVM

 

Control

Case

Sensitivity

Specificity

Sensitivity

Specificity

#1

CONTROL

MS

0.87

1.00

0.87

0.97

CONTROL

CIS âž” MS

0.96

 

0.95

 

#2

OND

MS

0.70

1.00

0.82

0.78

OND

CIS âž” MS

1.00

 

1.00

 

#3

OND-NI

MS

0.86

1.00

0.84

0.94

OND-NI

CIS âž” MS

1.00

 

1.00

 

#4

OND-I

MS

0.90

1.00

0.77

0.93

OND-I

CIS âž” MS

1.00

 

0.98

 
  1. Optimum ratios for the ratioscore method were from Figures 2, 3 and Additional file 3: Figure S3. CIS ➔ MS subject data were inputted and scores computed. For the SVM, 60% of controls and cases were randomly selected for the training set and 40% were used for the validation set. Sensitivity and specificity were calculated for the combined sets. These results defined the SVM. CIS ➔ MS subject data were applied to the SVM and subjects received a score of 0 if assigned to the CONTROL cohort or 1 if assigned to the CASE cohort. Sensitivity was calculated from this output.
  2. Sensitivity = # true positives/(# true positives + # false negatives).
  3. Specificity = # true negatives/(# true negatives + # false positives).