Table 2. System-wise classification of anomalies.
| Affected system | Anomalya | Number of cases | Prevalence per 10,000 births | Number of affected live births | Prevalence per 10 000 live births |
|---|---|---|---|---|---|
| All anomalies | 42 | 230.51 (170.99–310.11) | 30 | 168.44 (118.24–239.44) | |
| Congenital heart defects | 12 | 65.86 (37.72–114.77) | 11 | 61.76 (34.52–110.26) | |
| Complex congenital heart defects | 2 | 10.98 (3.01–39.94) | 2 | 11.28 (3.08–40.85) | |
| Atrial septal defect | 8 | 43.91 (22.27–86.40) | 8 | 45.12 (22.78–88.39) | |
| Ventricular septal defect | 5 | 27.44 (11.73–64.08) | 5 | 28.2 (12.00–65.55) | |
| Other (includes one case each of double outlet right ventricle, single ventricle, tricuspid atresia, pulmonary valve atresia, aortic valve atresia and two cases of atrioventricular septal defect) | 7 | 38.42 (18.62–79.09) | 6 | 33.69 (15.45–73.31) | |
| Musculoskeletal system anomalies | 9 | 49.4 (26.01–93.61) | 7 | 39.3 (19.05–80.91) | |
| Talipes equinovarus | 6 | 32.93 (15.10–71.66) | 4 | 22.46 (8.74–57.61) | |
| Other (includes one case each of diaphragmatic hernia, cranio-facial dysmorphism, congenital scoliosis) | 3 | 16.47 (5.60–48.30) | 3 | 16.47 (5.73–49.41) | |
| Urinary system anomalies | 7 | 38.42 (18.62–79.09) | 5 | 28.2 (12.00–65.55) | |
| Congenital hydronephrosis (>10 mm) | 3 | 16.47 (5.60–48.30) | 3 | 16.92 (5.73–49.41) | |
| Polycystic kidney disease | 2 | 10.98 (3.01–39.94) | 2 | 11.28 (3.08–40.85) | |
| Other (includes one case each of bilateral renal agenesis and bladder outflow obstruction) | 2 | 10.98 (3.01–39.94) | - | - | |
| Nervous system anomalies | 5 | 27.44 (11.73–64.08) | - | - | |
| Neural tube defects including anencephaly (1), spina bifida (3) and encephalocele (1) | 5 | 27.44 (11.73–64.08) | - | - | |
| Other (includes one case of holoprosencephaly and two cases of Dandy Walker malformation) | 3 | 16.47 (5.60–48.30) | - | - | |
| Digestive system anomalies | includes one case each of tracheoesophageal fistula, duodenal atresia, hyperechogenic bowel and cleft palate | 4 | 21.95 (8.54–56.31) | 2 | 11.28 (3.08–40.85) |
| Genital anomalies | 3 | 16.47 (5.60–48.30) | 3 | 16.92 (5.73–49.41) | |
| Hypospadias | 2 | 10.98 (3.01–39.94) | 2 | 11.28 (3.08–40.85) | |
| Indeterminate sex | 1 | 5.49 (0.97–31.02) | 1 | 5.64 (0.99–31.74) | |
| Respiratory system anomalies | Congenital cystadenomatoid malformation of the lung | 2 | 10.98 (3.01–39.94) | - | - |
| Incomplete information to classify | 4 | 21.95 (8.54–56.31) | 3 | 16.92 (5.73–49.41) |
a Multiple anomalies have been counted once in each class