A strong trend towards relatively poorer success of ablative procedure and more frequently ongoing antiarrhythmic medication in patients assigned to older, and predominantly the oldest age group was attributable to a significantly lower rate of repeated ablations (5%, 13%, 14%, P=0,004).
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The sentences
Despite many efforts, the beneficial effect of most of these algorithms was inconsistent and did not reach statistical significance in preventing AF [ 69 , 70 ].