4. Adverse events in New Zealand public hospitals: principal findings from a national survey (2001)
Peter Davis, Roy Lay-Yee, Robin Briant, Stephan Schug, Alastair Scott, S Johnson, W Bingley
A two-stage retrospective review was carried out on 6,579 medical records. These were selected by systematic list sample from admissions for 1998 occurring in 13 public hospitals throughout New Zealand providing acute care and with over 100 beds, excluding specialist institutions. Following initial screening, medical records were subject to structured implicit review (that is, the guided exercise of professional judgement) by a team of trained medical officers using a standardised protocol.