Compared with the bottom quartile , those in the top quartile ( hsCRP > 4.86 mg/L ) were at increased risk of recurrent ischemic stroke ( unadjusted HR , 2.54 ; 95 % CI , 1.30-4 .96 ) , even after adjusting for demographics and risk factors ( adjusted HR , 2.32 ; 95 % CI , 1.15-4 .68 ) .