Table 4.

Logistic Regression Models for Myopic Visual Impairment with Grade (Age), Gender, Parental Education, Parent With Glasses, and Ethnicity as Covariates

	Model with Grade	Model with Age
Grade	1.28; 1.19–1.38	—
Age	—	1.24; 1.16–1.33
Gender
Male	reference	reference
Female	1.30; 1.10–1.54	1.38; 1.16–1.63
Parental Education	1.08; 0.97–1.20	1.14; 1.02–1.27
Parent Spectacle Usage	1.92; 1.60–2.30	1.92; 1.60–2.30
Ethnicity
Aryan	reference	reference
Mongol	1.58; 1.31–1.92	1.54; 1.28–1.86
Tibetan	0.96; 0.60–1.53	0.85; 0.53–1.35
Other	0.78; 0.30–2.00	0.73; 0.29–1.84

Data are odds ratios with 95% confidence intervals adjusted for sampling design effects.