The appropriateness of single page of activation of the cardiac catheterization laboratory by emergency physician for patients with suspected ST-segment elevation myocardial infarction: a cohort study

Table 3 Time intervals according to the chief complaint and on- or off-duty times

	Chief complaint Chest pain N = 87	Chief complaint Other symptoms N = 30	p
Door-to-ECG time Median, IQR	6 (2, 12)	9 (4,16)	0.077
Door-to-balloon time Median, IQR	66.5 (56, 82)	80 (67, 89)	0.028
% of door-to-balloon time < 90 min	65 (85.5%)	14 (82.4%)	0.741
	On duty N = 50	Off duty N = 67	p
Door-to-ECG time Median, IQR	10 (6, 17)	4.5 (1,9)	0.001
Door-to-balloon time Median, IQR	63 (53, 78)	77 (64, 86)	0.013
% of door-to-balloon time < 90 min	38 (88.4%)	41 (82.0%)	0.392

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