Simple analysis (n = 966)

Multiple analysis (n = 966)

Regression coefficient (95%CI)

P-value

Regression coefficient (95%CI)

P-value

Children’s Characteristics

logMAR

0.958 (0.836, 1.080)

p < 0.001

4.893 (4.083, 5.703)

p < 0.001

Age (years)

0.005 (−0.021, 0.030)

0.73

0.001 (−0.132, 0.133)

0.99

Male sex

−0.017 (−0.078, 0.045)

0.59

−0.095 (−0.399, 0.210)

0.54

Boarding at school

0.084 (0.016, 0.152)

0.02

0.237 (−0.112, 0.587)

0.18

Home first county

−0.181 (−0.246, −0.117)

p < 0.001

−1.335 (−1.730, −0.940)

p < 0.001

Home second county

−0.087 (−0.152, −0.022)

0.01

−0.811 (−1.170, −0.452)

p < 0.001

Parental and Family Characteristics

Mothers’ education (Illiterate as reference)

Not completing high school

−0.016 (−0.085, 0.051)

0.63

−0.238 (−0.610, 0.133)

0.21

>12 years education

0.002 (−0.151, 0.156)

0.98

−0.013 (−0.839, 0.812)

0.97

Fathers’ education (Illiterate as reference)

Not completing high school

−0.015 (−0.099, 0.069)

0.72

0.060 (−0.587, 0.707)

0.86

>12 years education

0.006 (−0.109, 0.121)

0.92

0.245 (−0.575, 1.065)

0.56

Both parents out-migrated for work

−0.076 (−0.175, 0.024)

0.14

−0.397 (−0.985, 0.192)

0.19