Effect of Orthokeratology on myopia progression: twelve-year results of a retrospective cohort study

BMC Ophthalmology

Table 5 GEE Model predicting change of refractive error over 12 years follow-up. (n = 131)

Predictor	β	S.E.	Z	p value
a
Intercept	−0.010	0.091	−0.11	0.916
Wearing Age(>10 y/o vs. <=10 y/o)	0.058	0.050	1.17	0.240
Stable Change(Yes vs. No)	−0.013	0.010	−1.38	0.167
Initial D(> = −5D vs. <−5D)	−0.007	0.053	−0.13	0.898
Initial A(> = −1.5D vs. <−1.5D)	0.153	0.056	2.75	0.006*
b
Intercept	−0.010	0.091	−0.11	0.916
Wearing Age (>10 y/o vs. <=10 y/o)	0.058	0.050	1.17	0.240
Stable Change (Yes vs. No)	−0.013	0.010	−1.38	0.167
M	−0.013	0.010	−1.38	0.169
J0	−0.182	0.045	−4.02	<0.001*
J45	−0.045	0.102	−0.44	0.659

Abbreviation: GEE, generalized estimating equations
*p-value < 0.05 was considered statistically significant after test
D, diopters; M, the spherical equivalent; J0, the astigmatism power vector associated with a horizontally oriented axis; J45, the astigmatism power vector associated with an obliquely oriented axis in the 45° meridian

ISSN: 1471-2415