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

BMC Ophthalmology

Table 4 GEE Model predicting change of refractive error over 8 years follow-up. (n = 131)

Predictor	β	S.E.	Z	p value
A
Intercept	−0.039	0.105	−0.37	0.711
Wearing Age(>10 y/o vs. <=10 y/o)	0.063	0.051	1.24	0.215
Stable Change(Yes vs. No)	−0.014	0.010	−1.43	0.151
Initial D(> = −5D vs. <−5D)	−0.012	0.054	−0.22	0.829
Initial A(> = −1.5D vs. <−1.5D)	0.181	0.070	2.60	0.009*
B
Intercept	−0.039	0.105	−0.37	0.711
Wearing Age (>10 y/o vs. <=10 y/o)	0.063	0.051	1.24	0.215
Stable Change (Yes vs. No)	−0.014	0.010	−1.43	0.151
M	−0.012	0.010	−1.14	0.255
J0	−0.189	0.051	−3.72	<0.001*
J45	−0.076	0.099	−0.77	0.444

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