Table 1

Diagnosis of 69 paediatric control patients with causes of arthritis other than Lyme borreliosis

DiagnosisNo of patients
Early onset pauciarticular JRA15
Rheumatoid factor negative polyarticular JRA 1
Oligoarticular JRA without subclassification16
Acute transient arthritis12
Reactive arthritis11
Juvenile spondyloarthropathy12
Septic arthritis 1
Vasculitis, non-classified 1