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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Arthritis Rheum. 2012 Aug;64(8):2677–2686. doi: 10.1002/art.34473

Table 6.

Performance of the SLICC Classification Criteria and the ACR criteria after classifying each of the 690 patients as either SLE or not SLE based on the principle of “Majority Rules”.

Rule “Sensitivity”1 “Specificity”2 Misclassified cases (number) Kappa
1997 ACR criteria3 290/349 (83%) 326/341 (96%) 74 0.79
SLICC Criteria 340/349 (97%) 288/341 (84%) 62 0.82

The difference between the rules in misclassification rate is not statistically significant, p=0.24.

1

“Sensitivity”: of those classified as SLE by the majority of raters, proportion (%) correctly classified by the rule as SLE.

2

“Specificity”: of those classified as not SLE by the majority of raters, proportion (%) correctly classified by the rule as not SLE.

3

ACR criteria are based on satisfying 4 out of 11 criteria.