Table 3.

Risk factors adjusted for age and adjusted for age and gender for uncorrected visual acuity in the reference population

Associated factors	Adjusted for age	Adjusted for age and gender
	p Value	β coefficient	r2	p Value
Prematurity <37 weeks	0.040	0.082	0.032	0.041
Low birth weight <2500 g	0.163	0.054	0.028	0.163
Maternal smoking during pregnancy	0.770	0.012	0.023	0.758
Maternal drinking during pregnancy	0.264	−0.042	0.024	0.270
Parental tertiary education (university or college)	0.755	−0.012	0.024	0.754
Monthly family income	0.685	−0.019	0.016	0.689
Employment of one parent	0.501	−0.028	0.030	0.506
Employment of both parents	0.791	0.011	0.029	0.798