Projections of hip arthroplasty in OECD countries up to 2050.

Objective: The study aims to estimate the future demand of hip arthroplasty for OECD countries and to compare the results with earlier studies.

Design: Based on data availability and validity 20 countries out of the OECD sample have been selected for projection analysis. Using historic data (1995-2012) and multiple linear regression technics a projection model was designed by an iterative process considering different explanatory variables such as health care expenditure, age groups, and projection time frames.