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Table 4 Differences between sexes

From: Association of lifestyle and body structure to ocular axial length in Japanese elementary school children

 

Boys

Girls

P value

n = 61

n = 61

Axial length (mm)

23.6 ± 0.9

23.1 ± 0.9

0.002

Body height (cm)

131.5 ± 5.1

133.4 ± 5.7

0.07

Body weight (kg)

28.7 ± 4.5

29.0 ± 5.2

0.68

BMI (kg/m2)

16.5 ± 1.8

16.2 ± 2.0

0.43

Indoor studying

2.6 ± 0.6

2.6 ± 0.6

0.991

Television viewing

2.6 ± 1.0

2.6 ± 0.8

0.900

Screen time

1.7 ± 0.8

1.2 ± 0.6

<0.001

Outdoor activities

1.7 ± 0.8

1.4 ± 0.5

0.015

Bed time

2.1 ± 0.6

2.2 ± 0.5

0.700

Dietary habit

2.8 ± 0.7

2.8 ± 0.7

0.787

Parental myopia

1.3 ± 0.8

1.3 ± 0.8

0.972

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BMC Ophthalmology

ISSN: 1471-2415

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