Daily emergency department (ED) workload data and patient perceptions of ED care
| Range | Mean (SD) | |
| Control variables | ||
| Overall patient no/day | 89–171 | 120.23 (17.37) |
| ESI1 patients | 0–4 | 0.90 (0.96) |
| ESI2 patients | 2–36 | 15.95 (9.38) |
| ESI3 patients | 37–100 | 66.27 (17.87) |
| ESI4 patients | 2–43 | 17.87 (13.00) |
| ESI5 patients | 0–14 | 3.70 (4.05) |
| Provider staffing levels/day | 20.36–35.24 | 27.52 (3.20) |
| Daily ED workload* | 8.09–15.41 | 11.21 (1.58) |
| Outcome: patients’ perceptions of ED care | ||
| Overall quality of care | 1–6 | 4.69 (1.08) |
| ED organisation | 1–5 | 3.36 (1.14) |
| Patient information | 1–5 | 4.05 (1.06) |
| Waiting time | 1–5 | 3.63 (1.13) |
Scale range for overall quality of care (school grade, inversely coded): 1=very bad to 6=very good; scale range for other patient survey scales: 1=no, not at all to 5=yes, very much.
*Adjusted Emergency Department Work Index.
ESI, Emergency Severity Index.