A discrete survival model with random effects: An application to time to pregnancy

被引：90

作者：

Scheike, TH ^{[1
]}

Jensen, TK ^{[1
]}

机构：

[1] UNIV COPENHAGEN,DEPT GROWTH & REPROD,RIGSHOSP,DK-2100 COPENHAGEN O,DENMARK

来源：

BIOMETRICS | 1997年 / 53卷 / 01期

关键词：

Cox-regression; discrete survival models; fecundity; frailty models; left truncation; random effects; retrospective sampling; right truncation; time to pregnancy;

D O I：

10.2307/2533117

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Time to pregnancy, the number of menstrual cycles it takes a couple to conceive, and various covariates have been collected among couples ultimately achieving conception. To assess the influence of the covariates, we constructed a discrete survival model that allows time-dependent covariates. A random effect was included to account for unobserved heterogeneity. The collected waiting times are obtained through retrospective ascertainment and are analyzed as truncated data. Maximum likelihood estimation was implemented by Fisher scoring through iteratively reweighted least squares.

引用

页码：318 / 329

页数：12

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