Author Affiliations: Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital (Dr Profit), Section of Health Services Research, Department of Medicine, Baylor College of Medicine (Drs Profit and Woodard), and Houston Veterans Affairs Health Services Research and Development Center of Excellence, Health Policy and Quality Program, Michael E. DeBakey VA Medical Center (Drs Profit and Woodard), Houston, Texas.
Guillén and colleagues1 conducted a systematic review of studies performed in high-income countries on the effect of loss to follow-up on neurodevelopmental outcomes for extremely preterm infants. This study showed substantial variation in neurodevelopmental impairment (NDI) rates among cohorts, with the worst rates reported mostly from studies in the United States. The authors demonstrated that this can be partly explained by higher loss to follow-up of healthy patients among US cohorts.
Profit J, Woodard LD. Perils and Opportunities of Comparative Performance Measurement. Arch Pediatr Adolesc Med. 2012;166(2):191-194. doi:10.1001/archpediatrics.2011.810