Statistical model
This economic evaluation used Bayesian inference to estimate the causal effects of the trial, but the previous health impact evaluation of the same trial used a frequentist’s approach.Statistical model for Bayesian inference.We used a Poisson generalised linear multilevel model (GLMM) to analyse the data. The Poisson model is an appropriate method to infer relative risk by comparing the incidence of two groups based on count data. We also adopted a multilevel model that used random mixed effects in clusters to align the trial characteristics and the statistical model [