Table 5.

Summary of regression analysis for variables predicting SER (N=338)

Variables		β-value	SD	P-value
Constant		−0.79	0.35	0.03
Gender	Male	0.59	0.24	0.01
Sum of near work, h/wk		−0.03	0.03	0.17
Sum of outdoor activity, h/wk		0.000	0.03	0.99
Parental myopia	One parent	−0.92	0.29	0.002
	Both parents	−2.43	0.61	0.00

Abbreviation: SER, spherical equivalent of refraction.