Table 3. The association of characteristics with amplitude of fovea CT in univariable linear regression and multivariate linear regression.

Characteristics	Univariate linear regression		multivariate linear regression (AIC=567.4)
	Coefficients (95%CI)c	P c	Coefficients (95%CI)d	Pd
Age (a)	0.94(0.177,1.71)	0.22
Body mass index (kg/m2)	2.99(1.29,4.52)	0.02
Having daily regular exercise	-8.06(-11.98,-4.12)	0. 85
Daily use of visual display terminal≥4h	-8.82(-14.12,-3.52)	0.12
The Pittsburgh Sleep Quality Index score	-1.56(-2.96,-0.09)	0.29
Eye dominancea	11.26(6.21,16.46)	0.03	10.51(4.02, 14.60)	0.04
The status of refractive error correctionb	7.61(2.71,12.51)	0.13
Spherical equivalent refraction (D)	1.25(0.25,2.44)	0.20
Initial foveal CT(µm)	0.06(0.04,0.080)	0.009	0.05(0.03,0.08)	0.01
Ocular perfusion pressure	0.24(0.08,0.31)	0.14

^aThe percentage of subject whose right eye is the dominant eye; ^bThe percentage of subject who present with uncorrected refractive error.^cUnivariate linear association with amplitude of fovea CT; ^dVariables with P value≤0.2 in the univariate linear analysis were further controlled in the multivariate linear regression model to test the association with the amplitude of foveal CT. CT: Choroidal thickness.