In an intent-to-treat analysis , comprehensive care decreased both the rate of children with a serious illness ( @ per @ child-years vs @ for usual care ; rate ratio -LSB- RR -RSB- , @ -LSB- @ % CI , @-@ @ -RSB- ) , and total hospital and clinic costs ( $ @,@ vs $ @,@ per child-year , respectively ; cost ratio , @ -LSB- @ % CI , @-@ @ -RSB- ) .