The intervention group showed a significantly greater reduction , compared with the control group , in weight ( 14.3 and 3.6 kg , respectively ; P < .001 ) and in atrial fibrillation symptom burden scores ( 11.8 and 2.6 points , P < .001 ) , symptom severity scores ( 8.4 and 1.7 points , P < .001 ) , number of episodes ( 2.5 and no change , P = .01 ) , and cumulative duration ( 692-minute decline and 419-minute increase , P = .002 ) .