Table 3

Adverse event definition
Adverse event An unintended injurya that results in disability that results in temporary or permanent disability, death, or prolonged hospital stay and is caused by health care management rather than by the patient’s underlying disease process.
In our study, determination of the
    presence
of an adverse event was based on 3 criteria:
1. An unintended (physical and/or mental) injury which
2. Results in temporary or permanent disability, death or prolongation of hospital stay, and is
3. caused by health care management rather than the patient’s disease
Preventable adverse event An adverse event resulting from an error in management due to failure to follow accepted practice at an individual or system level. Accepted practice is the ‘current level of expected performance for the average practitioner or system that manages the condition in question’.

a Any disadvantage for the patient that leads to prolonged or strengthened treatment, temporary or permanent (physical or mental) impairment or death.

van Rosse et al.

van Rosse et al. BMC Health Services Research 2012 12:450   doi:10.1186/1472-6963-12-450

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