An economic analysis was conducted as an integral part of a comparison of the effectiveness and suitability of Hospital at Home (HaH) and in-patient interventions. The sample comprised of 109 adult primary total joint replacement patients and 21 of their coresident informal carers.
• The paper is presented in two parts. Part 1 includes the background and rationale for the study and the findings from the comparison of the effectiveness of the two interventions using multiple data collection sources.