Underwood C J, Faragher E B, Charlesworth D
Br J Surg. 1984 Jul;71(7):495-8. doi: 10.1002/bjs.1800710705.
This paper details the calculations involved in a life-table analysis and appraises the current use of this technique in vascular research. We suggest that the presentation of patency curves should be standardized and recommend that: curves are presented as step rather than continuous graphs; the number of patients remaining in a study are shown at intervals along patency curves; the length of time for which a curve is claimed to hold is more rigorously defined; an attempt is made to increase, where possible, the frequency of patient review, particularly in the immediate postoperative period; ways of increasing the total sample size (e.g. multicentre studies) are investigated. We also recommend that a set of definitive guidelines on the presentation of graft patency data acceptable to all the major vascular journals be sought.
本文详细介绍了生命表分析中涉及的计算，并评估了该技术目前在血管研究中的应用。我们建议通畅率曲线的呈现应标准化，并建议：曲线应以阶梯图而非连续图的形式呈现；沿通畅率曲线每隔一段时间显示仍留在研究中的患者数量；更严格地定义声称曲线有效的时间长度；尽可能增加患者复查的频率，尤其是在术后即刻；研究增加总样本量的方法（如多中心研究）。我们还建议寻求一套所有主要血管杂志都能接受的关于移植物通畅数据呈现的明确指南。
