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Table 5 Comparison of the performance characteristics of ELISA and MLDAf

From: Single-step autoantibody profiling in antiphospholipid syndrome using a multi-line dot assay

 

Sensitivity

95% CI

specificity

95% CI

+LR

95% CI

-LR

95% CI

at least one aPL antibody by ELISA

58.8

47.6 to 69.4

95.8

91.1 to 98.5

14.1

6.3 to 31.5

0.4

0.3 to 0.6

at least one aPL antibody by MLDA

67.9

56.8 to 77.6

89.6

83.4 to 94.0

6.5

4.0 to 10.8

0.4

0.3 to 0.5

at least one aPL IgG or at least three aPL IgM by MLDA

67.1

56.0 to 76.9

96.5

92.1 to 98.9

19.3

8.1 to 46.3

0.3

0.2 to 0.5

  1. Sensitivity, specificity and likelihood ratios were calculated using a cut-off of 10 U/ml for all ELISA investigating 85 APS patients, 65 DC patients, and 79 NHS.
  2. anti-β2 GPI, anti-beta2-glycoprotein I; anti-CL, anti-cardiolipin; aPL, anti-phospholipid antibody; ELISA, enzyme-linked immunosorbent immunoassay; MLDA, multi-line dot assay; +LR, positive likelihood ratio; -LR, negative likelihood ratio.