Bodnar E, Wain W H, Haberman S
Ann Thorac Surg. 1982 Aug;34(2):146-56. doi: 10.1016/s0003-4975(10)60875-2.
A statistical method is presented to assess and compare cardiac valve performances. Patient survival and valve performances have been separated, and valve function and malfunction have been described in comprehensive and comparable terms. Formulas are proposed to calculate the significance of the difference between two survival probabilities as well as to calculate the instantaneous rate of events and the median remaining lifetime.
提出了一种统计方法来评估和比较心脏瓣膜性能。已将患者生存率和瓣膜性能区分开来，并以全面且可比的方式描述了瓣膜功能和功能障碍。提出了用于计算两个生存概率之间差异的显著性以及计算事件瞬时发生率和中位剩余寿命的公式。
