Abstract:
OBJECTIVE:This study aimed to investigate the relationship between birth order and stereoacuity among Chinese children aged 60-72 months. DESIGN:Cross-sectional. PARTICIPANTS:1342 children with complete data on the questionnaire, stereoacuity and refraction were included. RESULTS:The mean stereoacuity was 53.2±1.7, 56.9±1.9 and 60.9±1.5 s of arc in the first-born group, second-born group and third-born group, respectively. Lower birth order was significantly correlated with better stereoacuity (p=0.036). Third-borns (OR=3.02, p=0.027) were at higher risk of having subnormal stereoacuity compared with first-borns in the multivariate analysis. CONCLUSION:Later-borns had poorer stereoacuity than first-borns.
journal_name
BMJ Openjournal_title
BMJ openauthors
Han S,Zhang X,Li R,Tong H,Zhao X,Wang Y,Hao Q,Huang D,Zhu H,Zhang X,Liu Hdoi
10.1136/bmjopen-2019-032833subject
Has Abstractpub_date
2020-10-12 00:00:00pages
e032833issue
10issn
2044-6055pii
bmjopen-2019-032833journal_volume
10pub_type
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