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Table 1 Baseline data for subjects with osteoarthritis (OA) or rheumatoid arthritis (RA) or without arthritis

From: Expression analysis of three isoforms of hyaluronan synthase and hyaluronidase in the synovium of knees in osteoarthritis and rheumatoid arthritis by quantitative real-time reverse transcriptase polymerase chain reaction

   Age (years)  
Subjects Number (male/female) Mean ± SD Range Radiographic gradea
With OA 17 (9/8) 64.77 ± 9.02 45 – 83 B
With RA 14 (2/12) 60.55 ± 12.05 35 – 74 B
Controls 20 (11/9) 37.25 ± 7.59 29 – 59 Normal
  1. aDetermined on x-ray frontal views of the tibiofemoral joints in accordance with the radiographic atlas recommended by the Osteoarthritis Research Society [32]. SD, standard deviation.