Table 1:

Comparison of the baseline characteristics between the two groups

Item	Control group (n=120)	Study group (n=120)	t/X2	P
Gender(%)			0.427	0.513
Male	72 (60.0)	67 (55.8)
Female	48 (40.0)	53 (44.2)
Age (year)	63.66 ± 4.17	64.05 ± 4.18	0.727	0.468
Course of disease (year)	2.08 ± 0.64	2.07 ± 0.66	0.100	0.921
NYHS classification (%)			0.338	0.845
Class II	35 (29.2)	31 (25.8)
Class III	56 (46.7)	59 (49.2)
Class IV	29 (24.2)	30 (25.0)

Values are mean ± SD or n (%).