Pericardial closure with extracellular matrix scaffold following cardiac surgery associated with a reduction of postoperative complications and 30-day hospital readmissions

Table 2 Baseline demographics and comorbidities of RECON and NRD patients

Characteristic	Valve Repair/Replacement					Coronary Artery Bypass Graft Surgery Patients
	NRD (n = 42,269)		RECON (n = 392)		Standardized Difference^a	NRD (n = 57,364)		RECON (n = 866)		Standardized Difference^a
	n or Mean	% or SD	n or Mean	% or SD	Standardized Difference^a	n or Mean	% or SD	n or Mean	% or SD	Standardized Difference^a
Age, mean (SD)	66.20	13.47	62.27	12.87	0.30	64.92	10.26	61.68	10.21	0.32
Female, n (%)	15,995	37.84	137	34.95	0.06	13,584	23.68	178	20.55	0.08
Prior cerebrovascular accident, n (%)	2585	6.12	16	4.08	0.09	3442	6.00	31	3.58	0.11
Congestive heart failure, n (%)	17,013	40.25	101	25.77	0.31	12,814	22.34	83	9.58	0.35
Chronic obstructive pulmonary disease, n (%)	5251	12.42	35	8.93	0.11	8617	15.02	98	11.32	0.11
Diabetes mellitus, n (%)	10,990	26.00	108	27.55	0.04	26,169	45.62	387	44.69	0.02
Prior myocardial infarction, n (%)	2654	6.28	32	8.16	0.07	9323	16.25	177	20.44	0.11
Chronic renal failure, n (%)	7064	16.71	17	4.34	0.41	9380	16.35	39	4.50	0.40
Hypertension, n (%)	29,886	70.70	291	74.23	0.08	47,623	83.02	746	86.14	0.09
Hypercholesterolemia, n (%)	23,102	54.65	137	34.95	0.40	43,950	76.62	555	64.09	0.28
Smoking, n (%)	10,284	24.33	71	18.11	0.15	14,782	25.77	245	28.29	0.06
Prior percutaneous coronary intervention, n (%)	3237	7.66	21	5.36	0.09	10,098	17.60	89	10.28	0.21

SD standard deviation
^aAbsolute value of the standardized difference > 0.1 is considered a large imbalance

ISSN: 1749-8090