Table 6

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

Group

FM

RA/SLE

Percent correct

FM (n = 202)

200

2

99.01%

RA/SLE (n = 51)

5

46

90.20%

Note: The combined correct classification for FM and RA/SLE = 97.23%. FM, fibromyalgia; RA/SLE, combined rheumatoid arthritis and systemic lupus erythematosus group.

Friend and Bennett Arthritis Research & Therapy 2011 13:R58   doi:10.1186/ar3311