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Table 1 Group Baseline Characteristics

From: Composite quantitative knee structure metrics predict the development of accelerated knee osteoarthritis: data from the osteoarthritis initiative

 Knee Osteoarthritis Group
VariablesAcceleratedTypicalNo 
[(means (SD); except where noted)(n = 125)(n = 125)(n = 125)P*
Females, n(%)79 (63%)79 (63%)79 (63%)1.00
Age (years)62.5 (8.5)*58.4 (8.4)57.3 (8.2)< 0.001
Body mass index (kg/m2)29.7 (4.6)*28.1 (4.4)26.9 (4.4)< 0.001
Index knee KL Grade = 0, n(%)42 (34%)*71 (57%)^92 (74%)< 0.001
WOMAC pain (0–20; ↑score = ↑pain)2.6 (3.3)1.6 (2.1)1.4 (2.0)0.08
Overall Global Rating (0–10, ↑score = ↑effect)1.7 (1.9)*1.1 (1.5)0.8 (1.1)< 0.001
Days with limited activity in prior month3.2 (7.3)^1.7 (4.8)1.4 (4.3)0.03
  1. P values are for the overall group main effect from a one-way analysis of variance (for continuous measures) or chi-square tests (for dichotomous variables). * = P < 0.017 versus typical knee osteoarthritis and no knee osteoarthritis, ^ = P < 0.017 versus no knee osteoarthritis