MPO and atrial fibrillation: Receiver-operating characteristic curve analysis showed MPO (venous AUC 0.755, 95% CI 0.599–0.912, P = .010; CS 0.734, 95% CI 0.578–0.891, P = .019) and NT-proANP (venous AUC 0.752, 95% CI 0.551–0.953, P = .011; CS 0.721, 95% CI 0.529–0.914, P = .026) as acceptable predictors for intermediate AF recurrence.