text_1: PCI 后 的 所有 脑血管 事件 发生率 均 低于 CABG 后 ( 3.3% vs . 5.2% ; 差异 , - 1.9 个 百分点 ; 95% CI , - 3.8 ~ 0 ) , 但 两组 的 卒 中 发生率 无 显著 差异 ( 2.9% 和 3.7% ; 差异 , - 0.8 个 百分点 ; 95% CI , - 2.4 ~ 0.9 ) .
  
text_2: all cerebrovascular events were less frequent after PCI than after CABG ( 3.3 % vs. 5.2 % ; difference , − 1.9 percentage points ; 95 % CI , − 3.8 to 0 ) , although the incidence of stroke was not significantly different between the two groups ( 2.9 % and 3.7 % ; difference , − 0.8 percentage points ; 95 % CI , − 2.4 to 0.9 ) .
  