𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Comparison of two medians using a two-sample lognormal model in environmental contexts

✍ Scribed by Michael R. Stoline


Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
824 KB
Volume
4
Category
Article
ISSN
1180-4009

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Unobserved covariates in the two-sample
✍ Philippe BroΓ«t; Thierry Moreau; Joseph Lellouch; Bernard Asselain πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 87 KB πŸ‘ 2 views

In analysing a clinical trial with the logrank test, the hazards between the two groups are usually assumed to be proportional. Nevertheless, this hypothesis is no longer valid with unobserved covariates. As a consequence, there is a loss of power of the logrank test for testing the null hypothesis