PLAAF score as a novel predictor of long-term outcome after second-generation cryoballoon pulmonary vein isolation.Aims
 The PLAAF (persistent AF, left atrial area, abnormal PV anatomy, AF history, female gender) score was defined to predict outcome.  Patients with a PLAAF score of 0 showed the best outcome, with an arrhythmia-free survival of 86.7%.


 PVI using the cryoballoon technique shows acceptable long-term results depending on predictors described by the new PLAAF score, which may facilitate patient selection for PVI.
PLAAF
The impact of several pre-existing variables on clinical outcome was evaluated by univariate and multivariate analyses using the Cox proportional hazards regression model. 
Cox proportional hazards regression model