text_1: 根据 分层 变量 进行 校正 的 分析 获得 了 类似 结果 ( 组间 差异 , 4.9 个 百分点 ; 95% CI , 0.5 ~ 9.3 ; P = 0.03 ) .
  
text_2: similar results were obtained in the analysis that was adjusted for stratification variables ( between @-@ group difference , 4.9 percentage points ; 95 % CI , 0.5 to 9.3 ; P = 0.03 ) .
  