Table 3:

Multivariable Linear Regression Modeling of Door-to-CT Times^*

Variable		Point Estimate, Minutes (95% CI)
Intercept		45.5 (33.8, 57.3)
Predictors
Patient Characteristics	Female vs male sex	−1.5 (−4.9, 1.9)
	Age (in years)	−0.03 (−0.1, 0.1)
	NIHSS score at admission	0.02 (−7.5, 7.9)
EMS Care Components	EMS documented classic symptoms	−9.1 (−13.5, −4.7)
	Stroke scale completed by EMS	−0.8 (−4.3, 2.7)
	Prenotification of receiving hospital of suspected stroke	−20.5 (−24.3, −16.6)
	12-lead ECG completed	−2.1 (−5.7, 1.4)
	Blood glucose obtained	−5.0 (−10.9, 0.8)
	Supplemental oxygen provided for pulse oximetry less than 94%	3.0 (−0.4, 6.4)
	Documented time of LKW or symptom onset	−5.2 (−8.9, −1.5)
	<2 minutes rom call to dispatch	1.8 (−6.3, 10.0)
	<15 minutes on-scene time	1.3 (−2.5, 5.2)
	Fully guideline-concordant care	0.2 (−7.5, 7.9)

^*Final model including 358 encounters without missing outcome variables.

Abbreviation: CI – Confidence Interval; LKW – last known well