The effect of mixed distributions on the methods of survival analysis

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 co...

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Veröffentlicht in:	Journal of surgical oncology 1978, Vol.10 (1), p.67-72
1. Verfasser:	Bross, Dean S.
Format:	Artikel
Sprache:	eng
Schlagworte:	bladder cancer clinical stage Humans hypothesis testing Models, Biological Statistics as Topic survival analysis Urinary Bladder Neoplasms - mortality Urinary Bladder Neoplasms - radiotherapy Urinary Bladder Neoplasms - surgery
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Zusammenfassung:	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.
ISSN:	0022-4790 1096-9098
DOI:	10.1002/jso.2930100111