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Efficiency and optimal allocation in the staggered entry design

Communications in Statistics - Theory and Methods

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DOI: 10.1080/03610929308831033

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Abstract

The staggered entry design for survival analysis specifies that r left-truncated samples are to be used in estimation of a population survival function. The ith sample is taken at time Bi, from the subpopulation of individuals having survival time exceeding Bi. This paper investigates the performance of the staggered entry design relative to the usual design in which all samples have a common time origin. The staggered entry design is shown to be an attractive alternative, even when not necessitated by logistical constraints. The staggered entry design allows for increased precision in estimation of the right tail of the survival function, especially when some of the data may be censored. A trade-off between the range of values for which the increased precision occurs and the magnitude of the increased precision is demonstrated.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Efficiency and optimal allocation in the staggered entry design
Series title:
Communications in Statistics - Theory and Methods
DOI:
10.1080/03610929308831033
Volume
22
Issue:
2
Year Published:
1993
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
485-503
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
485
Last page:
503
Number of Pages:
19