A review of the medical records of over 14 000 admissions to 28 hospitals in New South Wales and South Australia revealed that 16.6% of these admissions were associated with an “adverse event”, which resulted in disability or a longer hospital stay for the patient and was caused by health care management; 51% of the adverse events were considered preventable. In 77.1% the disability had resolved within 12 months, but in 13.7% the disability was permanent and in 4.9% the patient died.

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The high AE rate for surgical procedures supports the need for monitoring and intervention strategies. The 18 screening criteria provide a tool to identify admissions with a greater risk of a surgical AE. Risk factors for an AE were age and procedure, and these should be assessed prior to surgery. Prophylactic interventions for infection and deep vein thrombosis could reduce the occurrence of AEs in hospitals.

Objective To assess the frequency and nature of adverse events to patients in selected hospitals in developing or transitional economies. Participants Convenience sample of 26 hospitals from which 15 548 patient records were randomly sampled. DesignMain outcome measures Two stage screening. Initial screening based on 18 explicit criteria. Records that screened positive were then reviewed by a senior physician for determination of adverse event, its preventability, and the resulting disability.Results Of the 15 548 records reviewed, 8.2% showed at least one adverse event, with a range of 2.5% to 18.4% per country. Of these events, 83% were judged to be preventable, while about 30% were associated with death of the patient. About 34% adverse events were from therapeutic errors in relatively non-complex clinical situations.Inadequate training and supervision of clinical staff or the failure to follow policies or protocols contributed to most events. ConclusionsUnsafe patient care represents a serious and considerable danger to patients in the hospitals that were studied, and hence should be a high priority public health problem. Many other developing and transitional economies will probably share similar rates of harm and similar contributory factors. The convenience sampling of hospitals might limit the interpretation of results, but the identified adverse event rates show an estimate that should stimulate and facilitate the urgent institution of appropriate remedial action and also to trigger more research. Prevention of these adverse events will be complex and involves improving basic clinical processes and does not simply depend on the provision of more resources. IntroductionPreventable harm to patients resulting from their healthcare is unacceptable at any time. Patient safety is first and foremost a clinical problem, but it is also an important cause of wasted resources. Keeping patients safe can also be viewed as a public health problem and a human rights issue.1 Documentation of the scale of iatrogenic harm to patients has been accelerating [3][4][5] and the focus moved from negligence to preventability. Results suggested that rates of adverse events in patients in hospital in the developed world were much higher than previously thought, with multiple studies showing rates of at least 8%. 6 Of these adverse events, more than 50% were judged to be preventable, and a worrying number of the patients experienced permanent disability or death as a result of the events. These reports suggest that the deaths of between 0.5% and 2% of patients in hospital are associated with an adverse event, which was often, but not always, preventable. These studies would rank harm from healthcare high on the list of all causes of death for the countries being studied. All published studies to date, however, have been from developed countries, with no reports from developing or transitional economies. This knowledge gap is a serious limitation to understanding the extent of the problem at the global level and, more imp...