Table 5 Correlation between APE and biometric parameters (multivariable analysis)

From: Refractive outcome and lens power calculation after intrascleral intraocular lens fixation: a comparison of three-piece and one-piece intrascleral fixation technique

Formula		Yamane				Carlevale
Formula		Estimate	P value	VIF	Adjusted R² of model	Estimate	P value	VIF	Adjusted R² of model
SRK/T	Intercept	− 4.99	0.247		0.243	− 4.02	0.466		0.408
	AL	− 0.25	0.012	1.341		− 0.05	0.556	1.312
	WTW	0.21	0.431	1.146		− 0.67	0.158	1.774
	Kmean	0.63	0.106	1.290		0.90	0.183	1.483
	ELP	0.82	0.037	1.382		1.31	< 0.001	1.557
	Decentration	− 0.25	0.473	1.226		− 0.70	0.337	1.431
	Tilt	0.04	0.208	1.075		0.05	0.560	1.771
Holladay 1	Intercept	− 2.33	0.580		0.095	− 2.34	0.662		0.346
	AL	− 0.15	0.103	1.341		0.02	0.758	1.312
	WTW	0.12	0.666	1.146		− 0.60	0.194	1.774
	Kmean	0.16	0.660	1.290		0.41	0.530	1.483
	ELP	0.80	0.038	1.382		1.26	< 0.001	1.557
	Decentration	− 0.29	0.412	1.226		− 0.69	0.334	1.431
	Tilt	0.04	0.214	1.075		0.04	0.647	1.771
Hoffer Q	Intercept	3.61	0.407		0.255	− 0.82	0.886		0.288
	AL	− 0.17	0.084	1.341		0.02	0.841	1.312
	WTW	0.10	0.723	1.146		− 0.46	0.342	1.774
	Kmean	− 0.50	0.203	1.290		0.08	0.905	1.483
	ELP	0.80	0.043	1.382		1.20	0.003	1.557
	Decentration	− 0.23	0.516	1.226		− 0.64	0.395	1.431
	Tilt	0.04	0.276	1.075		0.02	0.813	1.771

APE = arithmetic prediction error; VIF = variance inflation factor; AL = axial length; WTW = white to white; Kmean = mean keratometry; ELP = effective lens position
Table shows the correlation between the APE of the investigated formulae and AL, WTW, the Kmean values, ELP, decentration and tilt calculated by multivariable regression models.
A P value less than 0.05 indicates that the slope deviates significantly from zero
A VIF value less than 4 indicates low collinearity
Values in bold letters represent statistically significance

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ISSN: 2326-0254

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