[Retracted] Effect of Chronic Heart Failure Complicated with Type 2 Diabetes Mellitus on Cognitive Function in the Elderly

Table 2

Comparison of intraoperative and postoperative clinical indexes (x ± s).

Group	n	Operation time (h)	Postoperative recovery time (h)	Cost of treatment (yuan)	LVEF score (%)
A group	306	19.86 ± 9.30	34.76 ± 12.01	47350.650 ± 449.35	39.21 ± 5.06
B group	337	19.65 ± 9.32	34.58 ± 12.11	47342.50 ± 429.18	40.25 ± 5.98
t		0.286	0.189	0.237	2.368
value		0.775	0.850	0.813	0.018