However, the ANOVA confirmed a highly significant difference between the groups for all three subdomains ( P < 0.0001 for each) and Cuzick's trend test showed a strong, and highly significant, trend towards lower scores with increasing mEHRA class ( P < 0.0001 for each of the three subdomains).
Hypertension was by far the most common comorbid condition (48.6% of all patients) and showed a significant trend towards increasing prevalence in higher EHRA classes ( P = 0.003).
However, there was a clear trend seen whereby those in less severe symptom classes were the most likely to have previously undergone ablation and those in the most severe classes were considerably more likely to subsequently go on to have an ablation for atrial fibrillation.