Table 4.
Summary of Multiple Linear Regression Model Estimating Log-transformed LOS of Individual Non-emergency (Category III–V) Patients
| Explanatory Variable | Percent Change in Waiting Time on Non-emergent Patients |
|
|---|---|---|
| Percent Change (95% CI) | p-Value | |
| Age, years | ||
| ≤65 | Reference | |
| >65 | 10.4 (9.5–11.4) | <0.001 |
| Mode of arrival | ||
| Walk-in | Reference | |
| Ambulance | −11.0 (−11.8 to −10.3) | <0.001 |
| Disposition status | ||
| Discharged | Reference | |
| Admitted | −21.8 (−22.6 to −20.9) | <0.001 |
| Triage category | ||
| III | Ref | |
| IV | 50.6 (49.2–52.0) | <0.001 |
| V | 45.3 (43.2–47.7) | <0.001 |
| Crowding factor | ||
| Number of all non-emergent patients waiting for triage | 2.0 (1.8–2.1) | <0.001 |
| Number of Category III patients waiting for consultation | 2.8 (2.6–3.0) | <0.001 |
| Number of Category IV patients waiting for consultation | 1.5 (1.5–1.6) | <0.001 |
| Number of Category V patients waiting for consultation | 0.8 (0.7–1.0) | <0.001 |
| Number of Category III patients in treatment | 0.8 (0.7–0.9) | <0.001 |
| Number of Category IV patients in treatment | 0.2 (0.1–0.3) | 0.001 |
| Number of Category V patients in treatment | −0.6 (−0.9 to −0.2) | <0.001 |
| Number of emergent patients | 10.8 (10.6–11.0) | |
LOS = length of stay; CI = confidence interval.