Group follow-up was associated with a mean reduction in QALYs gained of 0.04 per patient ( P value , 0.052 ; 95 % CI , -0.08 to 0.01 , intra-class correlation ( ICC ) , 0.033 ) and a mean reduction in total healthcare costs of 772 ( P value , 0.020 ; 95 % CI , -1,415 to -128 : ICC , 0.016 ) per patient .