Characteristics of the participating ICUs and patients; values are median (IQR) unless indicated otherwise
| Feedback only | Feedback with toolbox | |
| ICU-level characteristics | ||
| No included in analysis | 11 | 10 |
| Centre type | ||
| Academic | 2 | 1 |
| Non-academic | 9 | 9 |
| No of beds | 16.0 (11.0–24.0) | 12.5 (9.0–15.5) |
| No of FTE intensivists | 6.3 (4.9–9.0) | 6.1 (5.0–8.6) |
| No of FTE nurses | 64.0 (33.5–86.0) | 42.5 (28.4–50.9) |
| Patient-level characteristics | ||
| No of patient admissions during the trial | 13 950 | 11 284 |
| Admission type | ||
| Surgical (%) | 7282 (52.2) | 6003 (53.2) |
| Medical (%) | 6639 (47.6) | 5269 (46.7) |
| Unknown (%) | 29 (0.2) | 12 (0.1) |
| ICU length of stay in shifts | 4.0 (3.0–10.0) | 4.0 (3.0–9.0) |
| Total no of observed patient-shifts | 141 324 | 112 235 |
| Day shift | 50 239 | 39 928 |
| Evening shift | 45 957 | 36 247 |
| Night shift | 45 128 | 36 060 |
Performance pre-intervention includes 3 months before implementation of the intervention.
FTE, full-time equivalent; ICU, intensive care unit.