Table 2A.

Comparison of referring physician opinion to consulting rheumatologist’s primary diagnosis (3-way analysis).

Referring PhysicianRheumatology Consultant
RAUnresolvedNon-RATotal
RA6121275
Unresolved1142586225
Non-RA60814
Total18127106314
Observed agreement0.299
Expected agreement0.673
κ statistic0.11
95% CI, normal approximation0.07to 0.15
SE0.021