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Table 3 Ultrasonographic data of joints and association with flare after 6 and 12 months of evaluation

From: Patients with juvenile idiopathic arthritis in clinical remission with positive power Doppler signal in joint ultrasonography have an increased rate of clinical flare: a prospective study

  Flare after 6 months
(n = 70)
No flare after 6 months
(n = 3092)
p Flare after 12 months
(n = 80)
No flare after 12 months
(n = 2028)
p
Subclinical synovitis with positive PD signal 5 (7.1%) 14 (0.5%) <0.001a 4 (5%) 10 (0.5%) 0.001a
Subclinical synovitis with or without positive PD signal 10 (14.3%) 59 (1.9%) <0.001a 8 (10%) 45 (2.2%) 0.001a
  1. PD power Doppler
  2. a Fisher’s test