Table 4.

Interaction of hypertension and pro-oxidant–antioxidant balance on stroke recurrence (n = 951).

Interaction	Stroke Recurrence
	Crude Model			Adjusted Model
	OR *	95%CI *	p *	OR **	95%CI **	p **
Non-HTN × PAB (lowest score)	1.00			1.00
HTN × PAB (lowest score)	2.12	1.33–3.38	0.002	2.06	1.28–3.32	0.003
Non-HTN × PAB (1-point increment)	0.95	0.78–1.16	0.677	0.90	0.82–1.23	0.934
HTN × PAB (1-point increment)	0.86	0.69–0.97	0.012	0.83	0.66–0.94	0.022

Abbreviation: OR, odds ratio; CI, confidence interval; HTN, hypertension; PAB, pro-oxidant–antioxidant balance. * Results of bivariate logistic regression analysis. ** Results of multivariate logistic regression analysis, adjusted for age, education, ability to pay for medication, stroke classification, depressive symptoms, and comorbid conditions.