Table 3. Multivariate logistic regression analysis of selected variables for LAD tortuosity.

Variable	B	SE	X 2 value	P value	OR	95%CI
female	1. 040	0. 165	39. 929	<0. 001	2. 830	2. 049–3. 907
hypertension	0. 612	0. 194	9. 963	0. 002	1. 844	1. 261–2. 697
LAD≥50% stenosis	−0. 192	0. 210	97. 095	<0. 001	0. 755	0. 574–0. 994