text_1: 在 敏感性 分析 中 , 我们 假设 全 髋关节 置换术 组失访 患者 的 主要 事件 风险 高 达 完成 随访 患者 的 4 倍 ; 敏感性 分析 并未 改变 我们 的 主要 结果 .
  
text_2: sensitivity analyses in which patients in the total hip arthroplasty group who were lost to follow @-@ up were assumed to have had a risk of a primary event that was up to 4 times as high as the risk among those with complete follow @-@ up did not alter our principal findings .
  