Table 2.

Hemodynamic variables of patients before and after β-blockers therapy.

Characteristics	Intervention group (N = 619)		Control group (N = 619)
	Before β-blockers therapy	After β-blockers therapy
HR [median (IQR)], bpm	94.1 [82.7, 107.3]	95.9 [85.3, 106.1]	87.0 [76.5, 98.0]
MAP [median (IQR)], mmHg	74.4 [68.6, 80.6]	75.8 [70.8, 83.7]	71.9 [67.8, 76.9]

Data are presented as mean ± SD or median (interquartile range) for skewed variables or proportions for categorical variables.

IQR, interquartile range; HR, heart rate; MAP, mean arterial pressure.