Table 3

Diagnostic characteristics of extra-articular manifestations (EAMs) for histologically proven rheumatoid vasculitis in 81 patients suspected of rheumatoid vasculitis

Accuracy, percentage patients correctly classified as either HRV or RA+EAM; PPV, positive predictive value; NPV, negative predictive value.
*Weighted EAM score; for explanation see “Patients and methods”.
    Peripheral neuropathy4588727072
    Peripheral neuropathy or purpura/petechiae8184837688
Number of EAM
Weighted EAM score*