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Table 1 Characteristics of JIA patients with and without TMJ arthritis confirmed by MRI

From: HLA II class alleles in juvenile idiopathic arthritis patients with and without temporomandibular joint arthritis

Characteristics With TMJ arthritis (n = 62) Without TMJ arthritis (n = 23) Total JIA (n = 85)
Demographics    
 Gender:    
 Female n (%) 47(75.8) 12(52.2) 59(69.4)
 Male n (%) 15(24.2) 11(47.8) 26(30.6)
P value 0.04  
Mean age at the time of MRI Years (± SD) 14.2(±2.6) 12.3 (±3.6) 13.7 (±3.0)
P value 0.01  
Disease characteristics    
 Disease duration in years 2.6(0,2–11) 3(0.6–6) 3.1(0.2–11)
 Median (IQR)
P value 0.45  
Years from the diagnosis 1.8(0–10) 2.2(0–7) 1.9(0–10)
Median (IQR)
P value 0.07  
Active joint counta Median (IQR) 7.8(0–22) 7.7(0–20) 7.8(0–22)
P value 0.81  
Laboratory characteristics    
ESR 12.8(2120) 6(2–20) 10.9(2–120)
Median (IQR)
P value 0.07  
CRO 7.6(0180) 0.4(0–1.83) 5.6(0–180)
Median (IQR)
P value 0.03  
ANA positive n (%) 8(38.1) 14(23.3) 22(27.2)
P value 0.19  
RF positive n (%) 6(9.8) 0(0) 6(7.1)
P value 0.12  
HLA B27 positive 15(24.2) 3(13.0) 18(21.2)
n (%)
P value 0.25  
  1. aActive joint count - joints with non-bony swelling or limitation of motion with either pain on motion or tenderness to palpation and also those where we have detected signs of arthritis using ultrasound or MRI