The intervention group showed a significantly greater reduction , compared with the control group , in weight ( @ and @ kg , respectively ; P < @ ) and in atrial fibrillation symptom burden scores ( @ and @ points , P < @ ) , symptom severity scores ( @ and @ points , P < @ ) , number of episodes ( @ and no change , P = @ ) , and cumulative duration ( @-minute decline and @-minute increase , P = @ ) .