Institution characteristics
| Hospital 1 | Hospital 2 | |
| Institution type (inpatient admissions/year) | ||
| Community hospital (52 000) | Academic teaching hospital (186 000) | |
| Participating wards (n) | ||
| Acute medical unit (2) | Geriatrics (1) | |
| Gastroenterology/internal medicine (1) | ||
| Heart failure/internal medicine (1) | ||
| Geriatrics (1) | ||
| Respiratory/internal medicine (1) | ||
| Existing interdisciplinary practice and approaches to adverse event detection and monitoring | ||
| Daily interdisciplinary ‘board round,’ typically focused on patients’ discharge requirements | Daily interdisciplinary ‘board round,’ typically focused on patients’ discharge requirements | |
| Online incident reporting system | Online incident reporting system | |
| Unstructured mortality case-note reviews | ||
| Major organisational changes during the study period | ||
| Incipient institutional merger | Deployment of a new electronic health record | |