14 citations · 24 across the 2 of their papers we have counts for
3 papers
Trial design considerations in the face of overdispersion and time-varying event rates: a meta-regression approach with an application in asthma
Bohua Chen, Christian Röver, Stefan Andreas +2
**Purpose:** Relative changes in event rates are a common primary endpoint in confirmatory asthma trials. Reliable assumptions about baseline event rates and extra-Poisson variabil…
Decline of COPD exacerbations in clinical trials over two decades -- a systematic review and meta-regression
Stefan Andreas, Christian Röver, Judith Heinz +3
BACKGROUND: An important goal of chronic obstructive pulmonary disease (COPD) treatment is to reduce the frequency of exacerbations. Some observations suggest a decline in exacerba…
Evidence synthesis for count distributions based on heterogeneous and incomplete aggregated data
Christian Röver, Stefan Andreas, Tim Friede
The analysis of count data is commonly done using Poisson models. Negative binomial models are a straightforward and readily motivated generalization for the case of overdispersed…