The effect of mixed distributions on the methods of survival analysis

✍ Scribed by Dean S. Bross

• Publisher: John Wiley and Sons
• Year: 1978
• Tongue: English
• Weight: 377 KB
• Volume: 10
• Category: Article
• ISSN: 0022-4790
• DOI: 10.1002/jso.2930100111

✦ Synopsis

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.