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Fig. 1 | BMC Pediatrics

Fig. 1

From: Differences in close-work activities and optical axis length between only children and non-only children: a cross-sectional study

Fig. 1

Comparison of the AL in only children vs. multiples by sex and grade. Comparison of the rates of AL > 24 mm in only children and multiples overall and by sex (A). Comparison of the rate of AL > 24 mm by grade in only children and multiples (B). *, P < 0.05; **, P < 0.01; ***P < 0.001

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BMC Pediatrics

ISSN: 1471-2431

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