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  • Title: Birth prevalence of orofacial clefts among perinatal infants: A register-based study in Bao'an district, Shenzhen, China.
    Author: Luo YL, Wang W, Gao XH, Huang YH, Xu Q, Cheng YL.
    Journal: Birth Defects Res; 2019 Apr 15; 111(7):353-359. PubMed ID: 30802003.
    Abstract:
    BACKGROUND: The birth prevalence of orofacial clefts (OFCs) has been widely studied, but results are considerable varied, and epidemiological studies in southern China are few in numbers. To address this gap, we carried out a register-based study to estimate the birth prevalence of OFCs in Bao'an district, Shenzhen, China. METHODS: Data of perinatal infants born between 2003 and 2017 were extracted from Shenzhen Maternal and Child Health Management System. The overall OFCs birth prevalence with 95% confidence interval (CI) as well as subgroup analysis based on selected demographic factors was conducted. Cochran-Armitage trend tests were applied to evaluate the time trend by 5-year intervals. RESULTS: The overall birth prevalence of OFCs, cleft lip with or without cleft palate (CL/P) and cleft palate only (CPO) was 1.30 (95% CI 1.21-1.39), 1.00 (95% CI 0.92-1.08), and 0.30 (95% CI 0.25-0.34) per 1,000 births, respectively. An overall declining tendency was observed in the OFCs (from 1.83 to 1.04 per 1,000 births), specifically CL/P (from 1.53 to 0.69 per 1,000 births) birth prevalence over 5-year intervals, with statistical significance (p < 0.01). Subgroup analysis revealed that the CL/P and CPO birth prevalence was differed by infant gender, household registration, maternal age, and parity. CONCLUSION: Our findings had firstly reported the birth prevalence of OFCs in Bao'an district, and might help other researchers to plan more comprehensive public health strategies to reduce the occurrence of OFCs in further generation.
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