Table 3.

Outline of regression models for the various process and outcome measurements

Indicator	Dependent variable	Type	GEE model*
Process	Triage within 15 min	Binary	Logistic regression
Process	Timely assessment by physician	Binary	Logistic regression
Process	Vital signs evaluated within 30 min	Binary	Logistic regression
Process	Blood lactate measured within 30 min	Binary	Logistic regression
Process	Supplementing blood samples within 30 min	Binary	Logistic regression
Process	Blood culture taken before antibiotics	Binary	Logistic regression
Process	Adequate supplementing investigation within 24 hours	Binary	Logistic regression
Process	Antibiotic treatment within 1 hour	Binary	Logistic regression
Process	Intravenous fluid within 30 min	Binary	Logistic regression
Process	Oxygen therapy within 30 min	Binary	Logistic regression
Process	Adequate surveillance regime established	Binary	Logistic regression
Process	Adequate discharge from emergency room	Binary	Logistic regression
Outcome	30 day mortality	Binary	Logistic regression
Outcome	Length of stay	Continuous†	Linear regression

*Regression models with GEE.

†Transformed if skewed distribution.

GEE, generalised estimating methodology.