The shared frailty model and the power for heterogeneity tests in multicenter trials
Heterogeneity between centers in multicenter trials with time to event outcome can be modeled by the frailty proportional hazards model. The majority of the different approaches that have been used to fit frailty models assume either the gamma or the lognormal frailty density and are based on simila...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Elsevier
2002
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/28432 |
Similar Items: The shared frailty model and the power for heterogeneity tests in multicenter trials
- Supplementation Trial of KOKO Plus Among HIV Exposed Children in Accra
- Efectividad relativa de combinaciones de rizobios con leguminosas forrajeras tropicales: Catálogo de resultados de ensayos en invernadero y campo
- Measuring the burden of common morbidities: sampling disease experience versus continuous surveillance
- Rhizobium inoculation trials designed to support a tropical forage legume selection programme
- A procedure for allocating heterogenous units to treatment groups
- Effects of community-based sales of micronutrient powders on morbidity episodes in preschool children in Western Kenya