Location of occurrence, preventability, and impact of adverse events (AEs)
| Total* (n=735) | In-hospital† (n=568) | In-hospital, preventable (n=339) | In-hospital, preventable, serious (n=48) | |
|---|---|---|---|---|
| * Incident recorded by healthcare professional during sampled admission and later assessed as adverse event by study physician reviewer and any evidence of healthcare management causation. | ||||
| †AE occurred inside hospital; 167 adverse events occurred outside a public hospital, for example, in doctor’s office, ambulatory care unit, patient’s home, rest home, or private hospital. | ||||
| ‡Any evidence of preventability. | ||||
| §Permanent disability or death. | ||||
| ¶Attributable bed days in the study hospital spent over one or more admissions associated with an adverse event. | ||||
| Note: Percentages, means and 95% confidence intervals have been adjusted to account for stratified cluster sample design. | ||||
| AE occurrence per 100 admissions (n=6579 admissions) | 11.3 (9.3 to 13.4) | 8.8 (6.9 to 10.6) | 5.2 (4.3 to 6.0) | 0.7 (0.5 to 0.9) |
| % Preventable‡ | 61.6% (55.5 to 67.8) (n=457) | 58.8% (52.7 to 65.0) (n=339) | – | – |
| % Serious§ | 15.4% (13.3 to 17.6) (n=112) | 15.0% (11.8 to 18.3) (n=83) | 14.4% (11.3 to 17.5) (n=48) | – |
| Average extra bed days in hospital per AE¶ | 9.5 (8.0 to 11.1) (n=727) | 9.4 (7.5 to 11.4) (n=562) | 10.8 (8.0 to 13.6) (n=336) | 27.3 (13.3 to 41.4) (n=48) |