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Table 1 Demographic and clinical features of the study patients

From: Analysis of bacterial DNA in synovial tissue of Tunisian patients with reactive and undifferentiated arthritis by broad-range PCR, cloning and sequencing

Diagnosis (patients; n = 28) Median disease duration (months [range]) Actual age or median age (years [range]) Sex or sex ratio (M/F) Clinical details
ReA (n = 6) 2 (1–6) 35 (20–50) 5:1  
   1   28 M Sexually acquired ReA;Ct IgG positive serologya; Ct-positive PCRb
   2   22 M Sexually acquired ReA; Ct IgG positivea
   3   40 F Sexually acquired ReA; Ct IgG positive serologya
   4   20 M Sexually acquired ReA; Ct IgG positive serologya; B27+c
   5   50 M Sexually acquired ReA; Ct IgG positive serologya; Ct positive PCRb; B27+
6   30 M Sexually-acquired ReA; Ct IgG positive serologya
UA (n = 9) 25 (2–60) 40 (22–59) 5:4 -
RA (n = 7) 66 (12–228) 44 (39–53) 2:5 -
OA (n = 6) 14 (12–24) 58 (44–70) 5:1 -
  1. aSerology positivity was determined by microimmunofluorescence assay. bChlamydia PCR in genital swabs was determined by Cobas Amplicor PCR assay (Roche Diagnostics Molecular Systems, Inc, CA, USA). cHLA-B27 positivity was determined using a microcytotoxicity assay. Ct, Chlamydia trachomatis; RA, rheumatoid arthritis; ReA, reactive arthritis; OA, osteoarthritis; UA, undifferentiated arthritis.