Brian Neelon

Bayesian two-part spatial models for semicontinuous data with application to emergency department expenditures

2015 · Biostatistics

In health services research, it is common to encounter semicontinuous data characterized by a point mass at zero and a continuous distribution of positive values. Examples include medical expenditures, in which the zeros represent patients …

Bayesian Zero-Inflated Negative Binomial Regression Based on Pólya-Gamma Mixtures

2018 · Bayesian Analysis

Motivated by a study examining spatiotemporal patterns in inpatient hospitalizations, we propose an efficient Bayesian approach for fitting zero-inflated negative binomial models. To facilitate posterior sampling, we introduce a set of latent variables that are …