Sastry N
J Am Stat Assoc. 1997 Jun;92(438):426-35. doi: 10.1080/01621459.1997.10473994.
"This article presents a multivariate hazard model for survival data that are clustered at two hierarchical levels.... We apply the model to an analysis of the covariates of child survival using survey data from northeast Brazil collected via a hierarchically clustered sampling scheme. We find that family and community frailty effects are fairly small in magnitude but are of importance because they alter the results in a systematic pattern."
本文提出了一种针对在两个层次水平上聚类的生存数据的多变量风险模型……我们将该模型应用于对儿童生存协变量的分析，使用通过分层聚类抽样方案从巴西东北部收集的调查数据。我们发现，家庭和社区脆弱性效应的量级相当小，但很重要，因为它们会以一种系统的模式改变结果。
