Dr Pia Hardelid

I am a research associate at the Dr Foster Unit, where I work on various projects related to hospital safety and quality of care, including examining variation across England in admission rates for non-essential surgical procedures , and estimating of the positive predictive value of hospital standardised mortality ratios (HSMRs) using simulation.

My background is in infectious disease epidemiology; I have a PhD from the UCL Institute of Child Health, for which I investigated the seroepidemiology of rubella in pregnant women in North London, and the use of mixture models to estimate population immunity to infectious diseases.

Before starting at the Dr Foster Unit I worked as a statistician at the Health Protection Agency Centre for Infections, where I was involved in several research projects linked to the 2009 influenza A/H1N1 pandemic, including a nationwide pandemic influenza seroincidence study, influenza vaccine effectiveness estimation and the development of a national mortality monitoring system.