Table 2. Association between visual impairment with age, gender, education, and area.

	OR (95% CI)	P-value
Sex
Male/female	1.02 (0.62–1.67)	0.933
Age
years	1.07 (1.05–1.09)	0
Education
Illiterate	1
Primary school	0.66 (0.45–0.95)	0.03
Guidance School	0.35 (0.17–0.7)	0.006
High school	0.32 (0.15–0.67)	0.005
College	0.48 (0.17–1.37)	0.154
Area (Southwest/north)	1.02 (0.62–1.67)	0.933

Abbreviations: CI, confidence interval; OR, odds ratio.