Abstract:
:Interval-censored survival data often occur in medical studies, especially in clinical trials. In this case, many authors have considered estimation of a survival function. There is, however, relatively little discussion on estimating the variance of estimated survival functions. For right-censored data, a special case of interval-censored data, the most commonly used method for variance estimation is to use the Greenwood formula. In this paper we propose a generalization of the Greenwood formula for variance estimation of a survival function based on interval-censored data. Also a simple bootstrap approach is presented. The two methods are evaluated and compared using simulation studies and a real data set. The simulation results suggest that the methods work well.
journal_name
Stat Medjournal_title
Statistics in medicineauthors
Sun Jdoi
10.1002/sim.719subject
Has Abstractpub_date
2001-04-30 00:00:00pages
1249-57issue
8eissn
0277-6715issn
1097-0258journal_volume
20pub_type
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