Table 2.

The table reports the mean and the standard deviation (STD) of the different interventional time periods measured in the COVID-19 and the Baseline (from 2016 to 2018) periods.

	COVID-19		Baseline (2016–2018)
Time periods (min)	Mean	STD	Mean	STD	z	p	Baseline upper limit	N (%) of patients exceeding upper reference limit
Onset–to-door	84.1	21.4	86.2	46.44	0.18	0.850	178	0 (0%)
Door-to-first CT/MRI	54.9	18.5	30.62	31.62	3.07	0.002	108	0 (0%)
Door-to-needle	100.7	40.4	77.39	36.12	1.81	0.070	167.7	0(0%)
Door-to-groin puncture	189.1	49.2	137.12	75.13	2.49	0.010	308.8	1 (6.2%)

The z and p-values refer to the comparisons of the means.