Table 1.

Comparison of general information between the 2 groups [n (%), ($\overline{\chi }\pm s$)].

General information	Regular group (n = 60)	Observation group (n = 60)	t/χ2	P
Gender
male	38 (63.33)	40 (66.67)	0.147	.702
female	22 (36.67)	20 (33.33)
Age/year	72.52 ± 9.23	73.18 ± 8.79	−0.401	.689
BMI	23.22 ± 2.21	23.49 ± 2.72	−0.638	.554
Cardiac function classification
Grade II	15 (25.00)	11 (18.33)	0.786	.675
Grade III	33 (55.00)	36 (60.00)
Grade IV	12 (20.00)	13 (21.67)
Course of disease
< 1 year	12 (20.00)	10 (16.67)	0.670	.716
1–5 year	17 (28.33)	21 (35.00)
> 5 years	31 (51.67)	29 (48.33)
Hyperlipemia	26 (43.3%)	33 (55.0%)	2.564	.109
Hypertension	17 (28.3)	19 (31.7%)	0.274	.601
Diabetes	6 (10.0)%	6 (10.0%)	0.001	1.000