TABLE 1.

Baseline characteristics of the patients included in the analysis before and after propensity score matching

	Unmatched cohorts				Matched cohorts
Variables (%)	Female (n = 5,456)	Male (n = 13,822)	Total (n = 19,278)	p-value	Female (n = 5,385)	Male (n = 5,373)	Total (n = 10,758)	p-value
Age. median (25th–75th IQR)	70 (62–79)	68 (59–76)	69 (60–77)	<.01	70 (62–79)	70 (61–78)	70 (62–78)	.12
Diabetes mellitus	44.8	43.2	43.6	.15	44.8	45.1	44.9	.80
Hypertension	79.5	75.7	76.7	<.01	79.3	78.8	79	.59
Peripheral vascular disease	201	18.8	19.2	.17	19.9	20.2	20.1	.77
Chronic anemia	27.7	20.4	22.4	<.01	27.1	26.7	26.9	.78
Chronic heart failure	68	70.1	69.5	.057	68.2	67.8	68	.77
Chronic kidney disease	28.9	31.5	30.7	.01	28.9	30.9	29.9	.09
Chronic liver disease	3.1	3.2	3.1	.81	3.1	2.7	2.9	.36
Chronic lung disease	24.2	21.9	22.5	.03	24	23.9	23.9	.96
Atrial fibrillation	24.4	28.5	27.3	<.01	24.6	24.2	24.4	.73
Smoking	12.9	17.7	16.3	<.01	12.9	13.7	13.3	.42
Coagulopathy	20	17.3	18	<.01	19.8	18.7	19.2	.29
Obesity	19.2	15	16.2	<.01	18.7	20.4	19.6	.14
STEMI	26.8	27.9	27.6	.33	27	26.4	26.7	.64
Percutaneous coronary intervention (PCI)	75.4	74.5	74.7	.38	75.3	74.9	75.1	.73
Multivessel PCI	38.5	38.8	38.7	.76	38.5	40.2	39.4	.18
Drug eluting stent	66.5	65.2	65.6	.24	66.6	65.7	66.1	.49
Bare metal stent	6.3	6.7	6.6	.46	6.1	5.9	6	.79
Coronary artery bypass grafting	5.4	6.4	6.1	.07	5.4	5.9	5.7	.44
Hospital bed size
Small	8.7	8.8	8.8	.11	8.7	10.2	9.4	.09
Medium	26.6	24.5	25.1		26.6	24.9	25.7
Large	64.7	66.7	66.1		64.7	64.9	64.8

Abbreviations: IQR, interquartile range: STEMI; ST-segment elevation myocardial infarction.