期刊
CLEFT PALATE-CRANIOFACIAL JOURNAL
卷 43, 期 1, 页码 1-6出版社
ALLIANCE COMMUNICATIONS GROUP DIVISION ALLEN PRESS
DOI: 10.1597/04-085R2.1
关键词
birth defects; cleft lip and palate; congenital anomalies; craniofacial malformations; syndrome
Objective: To discuss methodological factors that account for the wide variation in the reported prevalence rates of anomalies associated with oral clefts. Conclusions: The published prevalences of associated anomalies vary considerably because of the following: (1) differences in case definition and inclusion/exclusion criteria; (2) length of time after birth that cases are examined; (3) variability of clinical expression of associated anomalies; (4) knowledge and technology available to produce syndrome delineation; (5) selection of patients, sources of ascertainment, and sample size; and (6) true population differences and changes in frequency over time.
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