Table 2.

Intervention effect on changes in health literacy score after controlling the effects of confounding variables.

Variable	Unstandardized Coefficients		Standard error	Significance level	Beta 95 % confidence interval
	Beta Regression coefficient	Regression coefficient standard error	Beta		Lower bound	Upper bound
(Constant)	−12.268	1.652		0.000	−15.542	−8.995
Intervention	12.476	1.026	0.756	0.000	10.443	14.509
(Constant)	−3.358	3.141		0.287	−9.582	2.865
Intervention	13.243	1.011	0.802	0.000	11.24	15.246
Health literacy scores before the intervention	−0.230	−0.070	−0.201	0.001	−0.369	−0.091
(Constant)	−3.066	3.099		0.325	−9.208	3.077
Intervention	13.421	1	0.813	0.000	11.438	15.403
Health literacy scores before the intervention	−0.181	0.073	−0.158	0.015	−0.326	−0.036
Education of spouse	−0.931	0.455	−0.129	0.043	−1.832	−0.030

^aDependent Variable: Health literacy score changes before and after the intervention R Square =) 0.624).