Table 5. Multivariate regression analysis to determine the significant independent factors associated with patients’ knowledge of their blood pressure readings (n = 465).

^§ P-value calculated using chi-square test. ** Significant at p < 0.05.

AOR: adjusted odds ratio; CI: confidence interval.

Factor	AOR	95% CI	P-value§
Age group
≤55 years	Ref
>55 years	0.839	0.466-1.510	0.558
Educational level
High school or lower	Ref
University degree or higher	3.027	1.569-5.839	0.001**
Time since diagnosis
≥5 years	Ref
<5 years	1.464	0.826-2.595	0.192
Regularly measure blood pressure
Yes	2.913	1.652-5.136	<0.001**
No	Ref
Compliance with blood pressure medication
Yes	1.131	0.625-2.047	0.685
No	Ref
Complications due to hypertension
Yes	0.949	0.552-1.632	0.850
No	Ref
Visited the emergency department due to high blood pressure
Yes	1.096	0.635-1.890	0.742
No	Ref
Rate your understanding of your chronic high blood pressure
Good	Ref
Acceptable	0.177	0.087-0.362	<0.001**
Weak	0.475	0.265-0.852	0.013**
Has a healthy lifestyle been discussed with you?
Yes	3.368	1.999-5.674	<0.001**
No	Ref