After @-year , the HbA@c failure rate was @ -LSB- @ % CI , @-@ @ -RSB- per quarter for the group medical visit arm , @ -LSB- @ % CI , @-@ @ -RSB- per quarter for the quarterly CRRC individual arm and , @ -LSB- @ % CI , @-@ @ -RSB- per quarter for the usual care control arm , p < @ .