In prespecified models stratified by stroke subtypes , there was a graded association of FGF@ with risk of cardioembolic stroke in fully adjusted models ( quartile @ , reference ; quartile @ hazard ratio , @ ; @ % confidence interval , @-@ @ ; quartile @ hazard ratio , @ ; @ % confidence interval , @-@ @ ; quartile @ hazard ratio , @ ; @ % confidence interval , @-@ @ ) .