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Updated: Aug 18, 2026

Measurement of Survival Time in Brachionus Rotifers: Synchronization of Maternal Conditions
Published on: July 22, 2016
The effect of mixed distributions on the methods of survival analysis
Abstract:
A study of the effectiveness of preoperative radiation as an adjuvant for surgery for patients with invasive bladder carcinoma revealed a subpopulation of patients having advanced disease who could not benefit from radiation treatment. The effect of such a group of patients on the efficiency of 2 common nonparametric tests is investigated here. Both Gehan's tests and Greenwood's tests were shown to have a very low efficiency when compared with a parametric test when this group of patients is present.
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