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Table 4 Assessment of test results

From: Identification of rheumatoid arthritis and osteoarthritis patients by transcriptome-based rule set generation

Training set from study group ‘Jena’ ‘Jena’ ‘Berlin’ ‘Berlin’ ‘Leipzig’ ‘Leipzig’
Test set from study group ‘Berlin’ ‘Leipzig’ ‘Jena’ ‘Leipzig’ ‘Jena’ ‘Berlin’
Number of rules for ‘CG’ 9 9 8 8 0 0
Number of rules for ‘OA’ 10 10 4 4 4 4
Number of rules for ‘RA’ 10 10 8 8 4 4
Sensitivity for RA (%) 100 100 92.3 100 92.3 90
Sensitivity for OA (%) 40 100 90 83.3 100 100
Specificity for RA (%) 100 100 80 83.3 100 100
Specificity for OA (%) 100 100 91.3 100 92.3 90
Overall specificity (RA/OA) (%) 100 n.a. 60 n.a. n.a. n.a.
Accuracy (%) 80 100 81.8 93.8 95.6 95
Test samples 30 16 33 16 23 20
Hits for CG 10 0 6 0 0 0
Hits for OA 4 6 9 5 10 10
Hits for RA 10 10 12 10 12 9
Hits total 24 16 27 15 22 19
Errors for CG 0 0 4 0 0 0
Errors for OA 6 0 1 1 0 0
Errors for RA 0 0 1 0 1 1
Errors total 6 0 6 1 1 1
  1. CG, control group; n.a., not applicable; OA, osteoarthritis; RA, rheumatoid arthritis.