LIFE TABLE METHODS FOR HETEROGENEOUS POPULATIONS - DISTRIBUTIONS DESCRIBING THE HETEROGENEITY
成果类型：
Article
署名作者：
HOUGAARD, P
刊物名称：
BIOMETRIKA
ISSN/ISSBN：
0006-3444
DOI：
10.1093/biomet/71.1.75
发表日期：
1984
页码：
7583
关键词：
摘要：
Taking account of heterogeneity between the individuals in population based mortality studies is important. A systematic way of describing heterogeneity is by an unobserved quantity called frailty, entering the hazard multiplicatively. Until now most studies have used a gamma distributed frailty, which is mathematically convenient; for example, the distribution among survivors is also gamma. Several other distributions have equally simple properties, the main example being the inverse Gaussian distribution. Consequences of the different distributions are examined; the inverse Gaussian makes the population homogeneous with time; for the gamma the relative heterogeneity is constant.