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  • Title: [The prevalence analysis of cleft palate in Chinese perinatals: 1996-2000].
    Author: Dai L, Miao L, Zhou GX, Zhu J, Li G.
    Journal: Hua Xi Kou Qiang Yi Xue Za Zhi; 2004 Feb; 22(1):35-7. PubMed ID: 15017696.
    Abstract:
    OBJECTIVE: To study the epidemiological features of cleft palate (CP) in Chinese perinatals. METHODS: Data from 1996 to 2000 were collected through Chinese Birth Defects Monitoring Network a hospital based congenital malformation registry system. During that period all live or still births with 28 weeks of gestation or more were assessed within 7 days after delivery. RESULTS: 499 perinatals with CP were identified among 2,218,616 births, then the overall prevalence rates of CP were 2.25/10,000, rates in isolated and syndromic CP were 1.75/10,000, 0.50/10,000 respectively. The rates in urban and rural area, in male and female births were 2.27/10,000 and 2.19/10,000, 1.93/10,000 and 2.57/10,000 respectively. The highest but nonsignificant rate (2.84/10,000) was found in maternal age group of more than 35 years. An increased trend was found both in overall CP and syndromic CP during that period. Geographic variation was found among provinces. The perinatal mortality rate of CP was 14.9%, and the rate of isolated forms was 7.3%, while the rate of syndromic CP was as high as 41.4%. CONCLUSION: The increasing prevalence rate of syndromic CP can account for the secular trend of overall CP. Female predominance was only observed in isolated forms of CP among Chinese perinatals. Geographic variation was identified too. Due to poor birth quality, perinatals suffering from syndromic CP had poor prognosis.
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