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Table 2 Time from starting ciclosporin to observing a clinical response in CSU patients with positive and negative serum BHRA

From: A positive serum basophil histamine release assay is a marker for ciclosporin-responsiveness in patients with chronic spontaneous urticaria

  +ve BHRA -ve BHRA
Immediate (days) 5 (25%) 0 (0%)
Early (< 1 month) 12 (48%) 11 (69%)
Late (1-3 months) 8 (32%) 4 (25%)
Delayed (> 3 months) 0 (0%) 1 (6%)
  1. χ2 = 5.7, df = 3, P<0.1.