Factors contributing to exercise tolerance in patients with coronary artery disease undergoing percutaneous coronary intervention

Table 3 Binary logistic regression analysis to identify exercise intolerance

Variables	Univariate regression analysis			Multivariate regression analysis
Variables	OR	95% CI	p-value	OR	95% CI	p-value
Sex			< 0.001			0.003
Male	0.388	0.219–0.685		0.328	0.156–0.692
Female	Reference			Reference
No. of stents			< 0.001			< 0.001
> 2	4.558	2.491–8.340		4.078	2.060–8.071
≤ 2	Reference			Reference
Diabetes mellitus			0.002			0.027
Yes	2.435	1.374–4.315		2.138	1.091–4.189
No	Reference			Reference
Dyslipidemia			0.054
Yes	1.942	0.097–3.778
No	Reference
BMI (kg/m²)	1.128	1.043–1.220	0.003	Not entered		–
LAD (mm)	1.165	1.091–1.245	< 0.001	1.173	1.081–1.272	< 0.001
EDV (per 10 ml)	1.188	1.072–1.316	0.001	1.199	1.066–1.349	0.003
Hemoglobin (per 10 g/l)	0.691	0.567–0.842	< 0.001	0.705	0.549–0.905	0.006

Factors found significant in univariate regression analysis were included in a forward stepwise multivariate logistics regression model with included criteria of p < 0.05 and removal criteria of p > 0.1. And Nagelkerke R² for the multivariate model = 0.373
OR Odds ratio, CI Confidence interval, Ref Reference, BMI Body mass index, LAD Left atrial diameter, EDV End-diastolic volume

ISSN: 2052-1847