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Eventābased analysis times for randomised clinical trials.
- Source :
-
Biometrika . Feb2001, Vol. 88 Issue 1, p245-253. 9p. - Publication Year :
- 2001
-
Abstract
- Analysis times for clinical trials are often based on the time when a specified total number of events occur. A modification is proposed in which this time is based on when either arm reaches a prespecified number of events. The implications in terms of the expected number of events required to achieve the same size and power at a specified alternative are explored. Savings are achieved when alternatives for which there is reasonable power hold, but more events are required at the null hypothesis. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00063444
- Volume :
- 88
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Biometrika
- Publication Type :
- Academic Journal
- Accession number :
- 44401158
- Full Text :
- https://doi.org/10.1093/biomet/88.1.245