Pre-hospital management of acute stroke patients eligible for thrombolysis – an evaluation of ambulance on-scene time

Table 1 Effects of explanatory variables on total on-scene time

Variable	Group	N	Median time (IQR)	Rate ratio (95% CI)	p-value
ECG	Before transport	326	21 (17–27)	1.00 (−)	–
	During transport	86	21 (14–28)	1.00 (0.92–1.08)	0.92
	At hospital	20	17 (15–20.5)	0.76 (0.64–0.90)	0.0015
First IV access	Before transport	385	21 (17–27)	1.00 (−)	–
	During transport	69	17 (13–23)	0.81 (0.73–0.89)	<.0001
	Not established	13	28 (23–29)	1.09 (0.91–1.30)	0.36
IV access during conference with stroke centre	Yes	174	20 (15–28)	1.00 (−)	–
IV access during conference with stroke centre	No	258	21.5 (16–27)	1.05 (0.98–1.13)	0.17
Quality of communication	Good	337	21 (16–26)	1.00 (−)	–
Quality of communication	Acceptable/Poor	95	23 (17–29)	1.10 (1.02–1.18)	0.014
Operator	Fire Departments^a	67	21 (16–28)	1.05 (0.96–1.15)	0.31
Operator	Falck	365	21 (16–27)	1.00 (−)	–
Presence of paramedic	Yes	190	21 (16–28)	0.99 (0.93–1.05)	0.69
Presence of paramedic	No	242	21 (16–27)	1.00 (−)	–
Presence of relative	Yes	159	21 (16–27)	0.98 (0.92–1.05)	0.65
Presence of relative	No	273	21 (16–27)	1.00 (−)	–
Vomit	Yes	35	25 (20–29)	1.16 (1.04–1.29)	0.0099
Vomit	No	397	21 (16–27)	1.00 (−)	–
Presence of trainee	Yes	38	20 (16–25)	0.92 (0.82–1.04)	0.18
Presence of trainee	No	394	21 (16–27)	1.00 (−)	–

The analyses were adjusted for all variables listed above as well as the timing of second IV access. The analysis of the first IV access was not adjusted for timing of the second IV access. Second IV access is not listed, as no model to isolate the effect of the second IV access could be developed
The number of observations in each group includes only those included in the multivariate analysis (i.e. only those with complete data in all the variables used in the analysis). Thus, all 520 observations were not necessarily used
^aFire Departments: Fire Department of Copenhagen and Fire Department of Frederiksberg

ISSN: 1757-7241