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Table 1 Descriptive Characteristics of those with Accelerated, Common, and No Knee Osteoarthritis (KOA) at Baseline

From: Accelerated knee osteoarthritis is associated with pre-radiographic degeneration of the extensor mechanism and cruciate ligaments: data from the Osteoarthritis Initiative

Variables
(means, SD; except where noted)
AKOA
(n = 125)
Typical KOA
(n = 125)
No KOA
(n = 125)
Females (n, %) 79 (63%) 79 (63%) 79 (63%)
Index knee KL Grade = 0 (n, %) 42 (34%) 71 (57%) 92 (74%)
Patellofemoral Osteoarthritis (MR-based) 88 (75%) 84 (69%) 80 (66%)
Frequent knee pain in past 12 months (n, %) 44 (35%) 49 (39%) 30 (24%)
Age (years) 62.5 (8.5) 58.4 (8.4) 57.3 (8.2)
Body mass index (kg/m2) 29.7 (4.6) 28.1 (4.4) 26.9 (4.4)
Global impact rating (0 to 10; higher score = greater impact) 1.7 (1.9) 1.1 (1.5) 0.8 (1.1)
How many days limited activities in past 30 days (0 to 30)? 3.2 (7.3) 1.7 (4.8) 1.4 (4.3)
WOMAC pain (0 to 20; higher score = more pain) 2.3 (3.1) 1.8 (2.3) 1.6 (2.4)
  1. AKOA accelerated knee osteoarthritis, KL Kellgren-Lawrence, MR magnetic resonance, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index