3. Adverse events in New Zealand public hospitals II: preventability and clinical context (2003)
Peter Davis, Roy Lay-Yee, Robin Briant, Wasan Ali, Alastair Scott, Stephan Schug
Methods: two-stage retrospective review of 6579 medical records randomly sampled from admissions for 1998 in 13 generalist hospitals providing acute care. Initial screening and medical review according to a standardised protocol. Results Eight hundred and fifty adverse events were identified, of which over one third (315) were preventable to a significant degree. Preventability of events increased with age of patient, and was more characteristic of certain diagnostic categories.