Table 4

Angiogram and PCI use among patients with STEMI in PCI centres by sex and pre-hospital delay

		Pre-hospital delay (All STEMI)					Early phase STEMI				Evolved STEMI				Recent STEMI
		<12	12–48 hours	>48 hours	Total	χ², p-value	F	M	Total	χ², p-value	F	M	Total	χ², p-value	F	M	Total	χ², p-value
Had angiogram?
No	n	31	3	5	39	4.25, 0.091*	8	23	21	0.30, 0.586	1	2	3	0.52, 0.443*	1	4	5	0.00, 1.000*
No	%	6.9	2.4	9.1	6.2		8.1	6.5	6.9		4.6	1.9	2.4		9.1	9.1	9.1
Yes	n	421	122	50	593		91	330	421		21	101	122		10	40	50
Yes	%	93.1	97.6	90.9	93.8		91.9	93.5	93.1		95.5	98.1	97.6		90.9	90.9	90.9
Total	n	452	125	55	632		99	353	452		22	103	125		11	44	55
Total	%	100	100	100	100		100	100	100		100	100	100		100	100	100
PCI use (among patients who had angiogram)
No	n	31	8	7	46	3.05, 0.235*	9	22	31	1.07, 0.301	4	4	8	6.46, 0.029*	2	5	7	0.38, 0.616 *
No	%	7.4	6.6	14	7.8		9.9	6.7	7.4		19.1	4.0	6.6		20.0	12.5	14.0
Yes	n	389	114	43	546		82	307	389		17	97	114		8	35	43
Yes	%	92.6	93.4	86	92.2		90.1	93.3	92.6		81.0	86.0	93.4		80.0	87.5	86.0
Total	n	420	122	50	592		91	329	420		21	101	122		10	40	50
Total	%	100	100	100	100		100	100	100		100	100	100		100	100	100

*Fisher’s exact test.
PCI, percutaneous coronary intervention; STEMI, ST-elevation myocardial infarction.