Table 1

Clinical characteristics of the twenty-three patients with Lyme arthritis and of four healthy control subjects*
Responsive Refractory P value
N = 8** N = 15**
Age, years 44 (17-53) 29 (12-78) 0.2
No. male/female 5/3 8/7 0.6
Duration of arthritis (months)
 Before treatment 0.1 (0.1-1) 1 (0.1-6) 0.06
 From start of antibiotics to sample date 0 (0-3) 4 (0-18) 0.001
 From start of antibiotics to resolution of arthritis 3 (1.5-3) 10 (4-20) 0.0001
Serum findings on the sample date
 Positive serologic result for B. burgdorferi
 antibodies by ELISA and Western blotting 8 15 1.0
Joint fluid findings on the sample date
 Total white cell count/mm3 25,750 12,150 0.01
(13,833-60,000) (5,694-46,250)
 % polymorphonuclear leukocytes 79 (28-91) 88 (16-98) 0.35
 Total mononuclear cells/mm3 1,600 1,500 0.69
(400-6,500) (320-6,300)
 No. PCR+/PCR- for B. burgdorferi DNA 8/0 5/10 0.002

*The four healthy control subjects had a median age of 36 (range, 28 to 42; three were women and one was a man. None had a positive serologic test result for B. burgdorferi antibodies.

**All values are given as median (range) unless otherwise noted. ELISA, enzyme-linked immunosorbent assay.

Katchar et al.

Katchar et al. Arthritis Research & Therapy 2013 15:R183   doi:10.1186/ar4373

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