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Charles Vincent Clinical Risk Unit, Department of Psychology,
University College London, London WC1E 6BT
Correspondence to: C Vincent c.vincent{at}ucl.ac.uk
Objectives:
To examine the feasibility of detecting
adverse events through record review in British hospitals and to make preliminary estimates of the incidence and costs of adverse events.
Design:
Retrospective review of 1014 medical and
nursing records.
Setting:
Two acute hospitals in Greater London area.
Main outcome measure:
Number of adverse events.
Results:
110 (10.8%) patients experienced an adverse event, with an overall rate of adverse events of 11.7% when multiple adverse events were included. About half of these events were judged
preventable with ordinary standards of care. A third of adverse events
led to moderate or greater disability or death.
Conclusions:
These results suggest that adverse events are a serious source of harm to patients and a large drain on NHS
resources. Some are major events; others are frequent, minor events
that go unnoticed in routine clinical care but together have massive
economic consequences.
© BMJ 2001
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