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Table 4 Prevalence of selected birth defects in 1993–1994 and 2009–2010, ranking of increased prevalence

From: Increased prevalence of some birth defects in Korea, 2009–2010

Order Birth Defects Prevalence per 10,000 live births (95 % CI)
1993–1994 2009–2010
1 Hypospadias and epispadias 0.7 (0.5–0.8) 9.9 (9.0–11.0)
2 Atrial septal defect 9.7 (9.1–10.3) 117.9 (114.6–121.3)
3 Undescended testis 2.6 (2.3–2.9) 29.1 (27.5–30.8)
4 Cystic kidney 0.7 (0.5–0.8) 6.9 (6.2–7.8)
5 Congenital hip dislocation 10.2 (9.6–10.8) 61.3 (58.9–63.8)
6 Microcephaly 0.5 (0.4–0.7) 3.0 (2.5–3.6)
7 Renal agenesis and renal dysplasia 0.6 (0.5–0.8) 3.7 (3.1–4.3)
8 Patent ductus arteriosus 7.0 (6.6–7.5) 40.1 (38.2–42.1)
9 Syndactyly 2.7 (2.4–3.0) 9.1 (8.1–10.0)
10 Spina bifida 2.8 (2.5–3.1) 7.7 (6.9–8.6)
11 Ventricular septal defect 34.1 (33.1–35.2) 62.9 (60.5–65.4)
12 Congenital hydrocephalus 1.6 (1.4–1.8) 2.8 (2.3–3.4)
13 Palate without cleft lip 6.8 (6.3–7.3) 10.0 (9.0–11.0)
14 Ebstein’s anomaly 0.5 (0.4–0.6) 0.6 (0.4–0.9)
15 Diaphragmatic hernia 1.0 (0.8–1.2) 1.3 (1.0–1.7)
16 Polydactyly 13.1 (12.5–13.8) 15.4 (14.2–16.6)
17 Anorectal atresia/stenosis 5.3 (4.9–5.7) 6.0 (5.2–6.8)
18 Hirschsprung’s disease 7.4 (6.9–7.9) 7.7 (6.9–8.6)
19 Oesophagus atresia with or without fistula 1.6 (1.4–1.8) 1.6 (1.3–2.1)