mitra 门维修或更换的结果:通过倾向性得分分析进行比较
Robert R Moss1, Karin H Humphries, Min Gao
1Division of Cardiology, St. Paul's Hospital, Vancouver, BC, Canada.
Circulation
|September 13, 2003
概括
与更换相比,米特拉的修复提供了更好的生存率,尽管它可能会导致更高的重新手术需要. 这项研究使用倾向评分来分析心脏手术患者的结果.
科学领域:
- 心血管外科心血管外科
- 医学统计 医学统计
- 临床结果研究研究
背景情况:
- 没有随机试验来比较米特拉 (MV) 修复与更换.
- 倾向性评分可以减轻非随机比较研究中的选择偏差.
研究的目的:
- 使用倾向性得分匹配,比较米特拉修复和更换后的生存率和重新操作率.
- 为了减少接受米特拉门手术的基于人群的队列中的选择偏差.
主要方法:
- 利用BC心脏注册 (1991-2000年) 对2060名接受MV手术的患者.
- 通过使用倾向分数,将322名MV修复患者与322名MV替换患者匹配起来.
- 使用Cox比例危险和多变量分析比较结果,包括带状节制手术.
主要成果:
- 倾向性得分匹配创造了平衡的比较组.
- 随访时间中位数为3.4年.
- 与替换相比,MV修复显示了显著改善的生存率 (RR 0.46),但与更换相比,更多的重复手术 (RR 2.11) 的趋势. 冠状动脉节约修复也显示出更好的生存率 (RR 0.52).
结论:
- 倾向得分方法有效地减少了在此MV维修/更换研究中的选择偏差.
- mitra 门修复与更高的生存结果有关.
- 伴随着中枢门修复,人们观察到重新手术的增加趋势.
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