Table 3.

Logistic regression analyzing associated factors on ORA larger than 1.0 diopters.

Variables	Univariable regression model		Multivariate regression model
	OR (95% CI)	P-value	OR (95% CI)	P-value
KmF	1.272 (1.226, 1.319)	<0.001	1.164 (1.115, 1.215)	<0.001
KmB	0.151(0.119, 0.193)	<0.001	–	–
Anterior corneal astigmatism	2.916 (2.686, 3.165)	<0.001	2.067 (1.836, 2.327)	<0.001
Anterior corneal eccentricity	8.555 (5.436, 13.464)	<0.001	–	–
Anterior corneal asphericity	0.103 (0.067, 0.159)	<0.001	0.569 (0.335, 0.966)	0.037
Posterior corneal astigmatism	147.617 (96.922, 224.829)	<0.001	6.921 (3.812, 12.566)	<0.001
Posterior corneal eccentricity	1.846 (1.320, 2.580)	<0.001	–	–
Posterior corneal asphericity	0.284 (0.193, 0.418)	<0.001	0.681 (0.421, 1.102)	0.118
Pachy apex	1.004 (1.003, 1.006)	<0.001	1.003 (1.001, 1.005)	0.002
Corneal volume −3 mm	1.965 (1.525, 2.530)	<0.001	–	–
Corneal volume −5 mm	1.343 (1.230, 1.467)	<0.001	–	–
Corneal volume −7 mm	1.184 (1.136, 1.234)	<0.001	–	–
Anterior chamber depth	0.616 (0.502, 0.757)	<0.001	1.296 (0.846, 1.985)	0.233
Anterior chamber volume	0.992 (0.991, 0.994)	<0.001	0.993 (0.990, 0.997)	<0.001

OR, odds ratio; ORA, ocular residual astigmatism; KmF, mean anterior corneal curvature; KmB, mean posterior corneal curvature; CI, confidence interval.