All patients were followed for 24months. Clinical visits and seven day Holter recordingswere
scheduled at baseline 3, 6, 12, 18, and 24
months. Holter analysis was blinded with respect to the treatment. A specific log-book
was used to collect information on AF symptoms and on contacts with other health care
providers. Quality of life was assessed using the SF 36 questionnaire at randomization
and after 12 and 24 months. Transthoracic echocardiography was performed at randomization
and after 12 and 24 months.