Table 3.

Comparison of Associated Factors of Dark-to-Light Change of Angle Width Parameters between the Caucasians and the Chinese

	Caucasians			Chinese
	β	P	95% CI	β	P	95% CI
	AOD500
Age	<0.001	0.838	−0.001 to 0.001	<0.001	0.205	0 to 0.002
Sex	0.01	0.426	−0.02 to 0.04	−0.005	0.614	−0.03 to 0.02
ΔIT750, mm	0.12	0.343	−0.13 to 0.37	0.21	0.01	0.05 to 0.36
ΔICurv, mm	0.12	0.211	−0.07 to 0.31	0.11	0.026	0.01 to 0.21
ΔIArea, mm2	0.07	0.323	−0.07 to 0.2	−0.09	0.214	−0.15 to −0.02
ΔPD, mm	0.05	0.003	0.02 to 0.08	0.04	<0.001	0.03 to 0.06
ACD, mm	0.02	0.427	−0.03 to 0.08	0.03	0.022	0.004 to 0.06
ACW, mm	0.03	0.131	−0.01 to 0.08	0.01	0.405	−0.01 to 0.03
LL	0.05	0.902	−0.80 to 0.91	0.03	0.953	−0.92 to 0.97
SE, D	<0.001	0.768	−0.004 to 0.006	−0.003	0.092	−0.005 to 0.001

	Caucasians			Chinese
	β	P	95% CI	β	P	95% CI
	ΔARA
Age	<0.001	0.207	0 to 0.002	<0.001	0.635	−0.001 to 0.001
Sex	−0.002	0.874	−0.03 to 0.03	−0.004	0.669	−0.02 to 0.01
ΔIT750, mm	0.16	0.214	−0.09 to 0.40	0.17	0.015	0.03 to 0.31
ΔICurv, mm	0.09	0.349	−0.10 to 0.40	0.06	0.032	0.005 to 0.12
ΔIArea, mm2	−0.02	0.735	−0.16 to 0.11	−0.05	0.129	−0.11 to 0.01
ΔPD, mm	0.04	0.014	0.01 to 0.07	0.04	<0.001	0.02 to 0.05
ACD, mm	0.01	0.692	−0.04 to 0.07	0.01	0.348	−0.01 to 0.04
ACW, mm	−0.01	0.604	−0.04 to 0.02	0.01	0.194	−0.01 to 0.03
LL	−0.34	0.427	−1.18 to 0.50	−0.001	0.996	−0.49 to 0.48
SE, D	−0.003	0.293	−0.008 to 0.002	−0.001	0.513	−0.003 to 0.002

	Caucasians			Chinese
	β	P	95% CI	β	P	95% CI
	ΔTISA
Age	<0.001	0.973	−0.001 to 0.001	<0.001	0.548	0 to 0.001
Sex	0.007	0.473	−0.01 to 0.03	<0.001	0.992	−0.01 to 0.01
ΔIT750, mm	0.16	0.067	−0.01 to 0.33	0.11	0.016	0.02 to 0.21
ΔICurv, mm	0.05	0.488	−0.08 to 0.17	0.06	0.032	0.005 to 0.12
ΔIArea, mm2	0.01	0.882	−0.08 to 0.10	−0.03	0.095	−0.07 to 0.01
ΔPD, mm	0.04	0.022	0.007 to 0.06	0.03	<0.001	0.02 to 0.04
ACD, mm	<0.001	0.991	−0.04 to 0.04	0.01	0.159	−0.005 to 0.03
ACW, mm	0.02	0.216	−0.01 to 0.05	0.01	0.075	−0.001 to 0.02
LL	−0.30	0.307	−0.87 to 0.28	−0.25	0.128	−0.58 to 0.07
SE, D	−0.001	0.481	−0.005 to 0.002	−0.001	0.241	−0.003 to 0.001

β, regression coefficient; 95% CI, 95% confidence interval of β; Δ, dark-to light change, calculated as the value in light minus the value in dark; AOD₅₀₀, angle opening distance at 500 μm from sclera spur; SE, spherical equivalent; LL, lens location. Coding: sex (male 1, female 2), ethnicity (Caucasians 1, Chinese 2). Statistically significant P values are highlighted in bold (P < 0.05).