Table 1.

Demographic characteristics of patients with heart failure in two groups and the results of statistical tests.

Variable	Classification	Intervention		Control
		n.	%	n.	%
Age (year)	20–35	9	14.8	7	11.3
	36–45	13	21.3	9	14.5
	46–55	4	6.6	17	27.4
	56–65	31	50.8	9	14.5
	66–75	4	6.6	20	32.3
	total	61	100	62	100
	Mean± standard deviation	13.08 ± 52.21		15.26 ± 55.23
	Independent t-test	P=0.226 ; df=121 ; t= -1.218
Gender	Female	16	26.2	21	33.9
	Male	45	73.8	41	66.1
	Total	61	100	62	100
	Chi-squared test	P=0.433 ; df=1 ; 0.854 =
Marital status	Single	4	6.6	4	6.5
	Married	52	85.2	49	79
	Widowed	5	8.2	6	9.7
	Divorced	0	0	3	4.8
	Total	61	100	62	100
	Chi-squared test	P=0.478;  df=3; 3.172 =
Educational level	Below diploma	20	32.8	30	48.4
	Diploma	17	27.9	18	29
	Academic education	24	39.3	14	22.6
	Total	61	100	62	100
	Chi-squared test	P=0.105;  df=2 ; 4.652 =
Number of hospitalizations due to heart failure	Mean± standard deviation	1.07 ± 1.70		0.97 ± 1.64
	Independent t-test	P=0.807;  df=66 ; t=0.245
Ejection fraction	Mean± standard deviation	12.41 ± 28.27		10.75 ± 24.19
	Independent t-test	P=0.053 ; df=121 ; t=1.951