She is specialized in the field of improvement science in health care with particular interest in quality registries. Research questions concern (1)the development of valid and reliable indicators on clinical performance and patient outcomes, (2) the determinants influencing the quality indicators, and (3) the mechanisms that stimulate improvement based on quality information. Jozé Braspenning is co-ordinator of the national expert centre on quality registries placed at The Netherlands Federation of University Medical Centres (NFU).