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Table 1 Basal characteristics of the subjects in the study

From: Relationships between biomarkers of cartilage, bone, synovial metabolism and knee pain provide insights into the origins of pain in early knee osteoarthritis

   Total K/L 1 K/L 2 P-value
n 46 30 16  
Pain (-/+) 30/16 22/8 8/8  
Gender (F/M) 32/14 19/11 13/3  
Age 67.5 67.4 68.0 0.31
(y) 7.1 (65.3 to 69.8) 6.8 (64.8 to 69.9) 8.3 (62.4 to 73.6) (-7.01 to 2.24)
BMI 24.9 24.5 26.1 0.37
(kg/m2) 4.4 (23.6 to 26.3) 4.3 (22.9 to 26.1) 4.6 (23.0 to 29.2) (-4.74 to 1.49)
Pain VAS score (0 to 100) Pain (-) 0 0 0  
   0 (0 to 0) 0 (0 to 0) 0 (0 to 0)  
  Pain (+) 35.1 37.5 25.3 0.14
   12.9 (25.9 to 44.2) 12.2 (27.2 to 47.7) 14.0 (14.2 to 38.6) (-0.21 to 2.66)
  1. F, female; K/L, Kellgren-Lawrence grade; M, male. Data are presented as the mean and SD (95% confidence interval (95% CI) of the mean).