Effect of bivalirudin on myocardial microcirculation and adverse events after interventional therapy in older patients with acute coronary syndrome

Table 1 Comparison of the general conditions of the two groups of patients

Group	n	Sex, n (%)		Age, mean ± SD	Time from onset to admission in h, mean ± SD	Comorbidities, n (%)
		Male	Female			High blood pressure	Diabetes	Cardiovascular disease
Observation group	85	45 (52.94)	40 (47.06)	64.29 ± 7.53	3.58 ± 0.71	49 (57.65)	38 (44.71)	19 (22.35)
Control group	80	40 (50.00)	40 (50.00)	63.78 ± 7.62	3.46 ± 0.75	44 (55.00)	35 (43.75)	17 (21.25)
χ2/t	-	0.143		0.432	1.056	0.117	0.015	0.029
P value	-	0.706		0.666	0.293	0.732	0.902	0.864

Observation group: Patients treated with bivalirudin; Control group: Patients treated with unfractionated heparin. SD: Standard deviation.