The adequacy of Australia’s infrastructure has been a long-standing topic of debate. This article provides some insight into the question of infrastructure adequacy by examining trends in investment across OECD countries, and discusses some of the fundamental factors influencing Australia’s...

This article considers the estimation of power and sample size in experimental and quasi-experimental intervention studies, where there is clustering of subjects within one or both intervention arms, for both continuous and binary outcomes. A new command, clsampsi, which has a wide range of...