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Table 2 Incidence of recurrent AF after catheter ablation according to CRP quartiles

From: C-reactive protein for prediction of atrial fibrillation recurrence after catheter ablation

Variable CRP level P trend
Quartile 1 Quartile 2 Quartile 3 Quartile 4
Quartile value, mg/l < 0.8 0.8–1.4 1.5–2.7 > 2.7  
 Events/Patients 60/201 61/171 55/167 71/172  
 Incidence, %a 33.1 41.9 37.0 53.4 0.017
 95% CI 24.4–42.3 32.1–54.7 29.9–49.1 41.6–68.5  
  1. P value was calculated by trend test of survival function across quartiles
  2. aIncidence at 1 year of follow-up in percent