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Table 6 Correct classification as predicted by discriminant analysis using seven pain sites and eight SIQR variables

From: Distinguishing fibromyalgia from rheumatoid arthritis and systemic lupus in clinical questionnaires: an analysis of the revised Fibromyalgia Impact Questionnaire (FIQR) and its variant, the Symptom Impact Questionnaire (SIQR), along with pain locations

Group FM RA/SLE Percent correct
FM (n = 202) 200 2 99.01%
RA/SLE (n = 51) 5 46 90.20%
  1. Note: The combined correct classification for FM and RA/SLE = 97.23%. FM, fibromyalgia; RA/SLE, combined rheumatoid arthritis and systemic lupus erythematosus group.