. Author manuscript; available in PMC: 2014 Jun 2.

Published in final edited form as: Br J Ophthalmol. 2010 May 14;94(8):1012–1016. doi: 10.1136/bjo.2009.173187

Table 3.

Risk factors associated with spherical equivalent refraction among Singapore Chinese preschool children

	Spherical equivalent retraction

	Regression coefficient^*	95% CI		p Value
Age (month)	0.01	0.00	0.02	<0.001
Girl versus boy	0.07	−0.02	0.16	0.12
One myopic parent versus no myopic parents	−0.11	−0.22	0.00	0.054
Two myopic parents versus no myopic parents	−0.35	−0.47	−0.22	<0.001
Height (cm)	−0.01	−0.02	0.00	0.01
Time spent outdoors (h/day)	0.03	0.00	0.07	0.07
Read words or pictures (yes vs no)	−0.06	−0.20	0.09	0.47
R²	0.022

Model has adjusted for familial cluster and all other factors in the table.