• Lih-Ju Chen, Jeng-Yuan Chiou, Jing-Yang Huang, Pen-Hua Su, and Jia-Yuh Chen.
• Division of Neonatology, Changhua Christian Children's Hospital, Changhua City, Taiwan; Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
• J Formos Med Assoc. 2020 Jan 1; 119 (1 Pt 3): 553-559.

Background/PurposeBirth defects (BDs) are main causes of mortality and disability in infants and children. The aims of this study were to analyze the prevalence, types and risk factors of BDs in Taiwan.MethodsData of all births (including live and stillbirths), types, characteristics, and associated risk factors of BDs were obtained from the National Birth Registry and National Health Insurance Research Data base in Taiwan between 2005 and 2014. Birth defects were coded according to International Classification of Diseases 9th Revision-Clinical Modification codes 740-759.ResultsA total of 55,299 infants were diagnosed as having BDs among 2,033,004 births. The prevalence of BDs was 271.66 per 10,000 births. The prevalence of BDs did not change significantly between 2005 and 2014, there was a higher birth rate and lower BDs in 2012 (year of dragon) in Taiwan. The most common type of BDs was cardiovascular abnormalities, and ventricular septal defect was the most common disease. Extreme maternal age (<18 years or ≧30 years), preterm, and low birth weight were associated with BDs. Maternal diseases associated with BDs included hypertension, cardiovascular diseases, renal diseases, genitourinary infections, anemia, mental disorders, and diabetes mellitus.ConclusionThe prevalence of BDs was 271.66 per 10,000 births. The most common types of BDs were cardiovascular abnormalities. If we can reduce maternal chronic diseases, we will decrease the prevalence of BDs.Copyright © 2019 Formosan Medical Association. Published by Elsevier B.V. All rights reserved.

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