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Table 1 Characteristics of knee osteoarthritis patients and controls.

From: Dickkopf-1 (Dkk-1) in plasma and synovial fluid is inversely correlated with radiographic severity of knee osteoarthritis patients

  Controls
(95%CI)
OA patients
(95%CI)
   
   Total KL grage 2 KL grade 3 KL grade 4
N 15 35 10 12 13
Age (years) 67.5 ± 4.6 68.8 ± 8.2 68.8 ± 6.8 68.1 ± 8.3 69.5 ± 7.5
  (65.3-70.3) (66.3-70.5) (63.9-73.6) (61.5-74.6) (64.9-73.9)
Female/Male 10/5 26/9 7/3 9/3 10/3
BMI (kg/m2) 25.5 ± 1.3 26.6 ± 3.8 26.2 ± 1.4 26.4 ± 3.1 27.2 ± 4.8
  (24.6-26.4) (25.3-28.0) (25.2-27.2) (24.5-28.4) (23.7-30.7)
  1. Data are expressed as mean and SD.
  2. BMI = Body mass index.
  3. KL = Kellgren and Lawrence