Table 2. Outcomes of CABG stratified by sex and multivariable regression analysis showing odds of developing post-operative complications following CABG in female patients with males as reference.

Variable	Female (%)	Male (%)	p-value	Unadjusted analysis		Adjusted analysisa
				OR	p-value	OR	p-valueb
Stroke	46 (3.2)	54 (1.1)	<0.001
Sepsis	10 (0.7)	24 (0.5)	0.288
DSMI	14 (1.0)	12 (0.2)	<0.001
Ventilator dependence >48 hours	200 (13.9)	398 (7.8)	<0.001	1.92 (1.60, 2.30)	<0.001	1.65 (1.21, 2.45)	0.002
Pneumonia	26 (1.8)	97 (1.9)	0.837
Renal Failure	49 (3.4)	81 (1.6)	<0.001	2.20 (1.53, 3.15)	<0.001	0.99 (0.63, 1.54)	0.946
Heart Block	21 (1.5)	26 (0.5)	<0.001
Cardiac Arrest	26 (1.8)	55 (1.1)	0.026
GI complications	29 (2.0)	88 (1.7)	0.446	1.18 (0.77, 1.80)	0.447	0.94 (0.59, 1.49)	0.788
Atrial Fibrillation	338 (23.6)	1269 (24.8)	0.333	0.93 (0.81, 1.07)	0.333	1.10 (0.96, 1.26)	0.202
Reoperation for cardiac complication	17 (1.2)	32 (0.6)	0.030
Reoperation for non-cardiac complication	66 (4.9)	191 (3.9)	0.094	1.37 (0.95, 1.98)	0.095	1.24 (0.23, 1.86)	0.293
Cardiac readmission	140 (9.8)	282 (5.5)	<0.001	1.85 (1.50, 2.29)	<0.001	1.56 (1.27, 2.30)	0.003
Non-cardiac readmission	161 (11.2)	324 (6.3)	<0.001	1.87 (1.53, 2.28)	<0.001	1.16 (0.77, 2.40)	0.402
Duration of stay (days) c	7.19 ± 5.93	6.30 ± 4.64	<0.001	0.074 (0.148)	<0.001	-0.108 (0.182)	0.554
30 day Mortality	46 (3.2)	75 (1.5)	<0.001	2.23 (1.54, 3.23)	<0.001	1.55 (1.01, 2.40)	0.046

^aAdjusted for, obesity, smoking status, diabetes, hypertension, history of myocardial infarction, heart failure, pre-operative ejection fraction and IABP use, heparin and anti-platelets, number of diseased vessels, IMA utilization, number of arterial and venous grafts and year of surgery.

^bBonferroni correction applied for multivariable regression—p<0.0045 considered significant.

^cResults of Linear regression analysis reported as standardized coefficient (coefficient standardized error)

DSMI: Deep sternal mediastinal infection; GI: gastrointestinal; IMA: Internal mammary artery.