Table 1.

Preoperative Characteristics of the Patients Included in the Meta‐Analysis

	P Group	C Group	OR/WMD† (95% CI)	P Overall Effect
Logistic EuroSCORE	12.5±6.9	11.3±6.2	1.24 (−0.48 to 2.87)	0.16
Age, y	77.7±4.6	75.9±5.9	1.45 (−0.36 to 3.27)	0.12
Female, %	56	56	1.05 (0.83–1.33)	0.67
Diabetes mellitus, %	27.1	20.9	1.33 (1.01–1.75)	0.04*
Chronic renal failure, %	14.3	14.1	1.02 (0.72–1.43)	0.93
COPD, %	15.2	14.1	0.93 (0.67–1.51)	0.68
CAD, %	9.1	9.1	1.01 (0.66–1.51)	0.93
Cerebrovascular accidents, %	10.2	8.6	1.21 (0.81–1.82)	0.35
NYHA class 3/4, %	55.5	54.7	1.12 (0.82–1.52)	0.47
Hypertension, %	73.7	69.6	1.20 (0.88–1.63)	0.24
LVEF	57.2±8	56.8±7.6	0.11 (−2.02 to 2.24)	0.92
Body mass index	27.7±4.9	26.9±4.4	−0.08 (−1.08 to 0.92)	0.88

CAD indicates coronary artery disease; CI, confidence interval; COPD, chronic obstructive pulmonary disease; LVEF, left ventricle ejection fraction; NYHA, New York Heart Association; OR, odds ratio; WMD, weighted mean difference.

*Indicates statistically significant.

†Data as percentage are odds ratios, mean values are weighted mean differences.