Table 2. Number of women recruited per group.

Group	Number of women	% of total recruited	% of group
Vascular Disruption Cases
Gastroschisis	59	11.4	27.7
Facial cleft	44	8.5	20.7
Renal anomaly	41	7.9	19.2
Cardiac defect	39	7.5	18.3
Non NTD Central Nervous System anomaly	20	3.9	9.4
*Other vascular	10	1.9	4.7
Total Vascular Disruption Cases	213	41.2	100
Non-Vascular Disruption Control Group
Exomphalos	30	5.8	21.0
Congenital Diaphragmatic Hernia	29	5.6	20.3
NTD	25	4.8	17.5
Talipes	23	4.4	16.0
**Aneuploidy	21	4.1	14.7
ΔGenetic	15	2.9	10.5
Total Non Vascular Disruption Controls	143	27.7	100
Normal Controls
Normal structure and karyotype	161	31.1	-
Total Control Group (Non-Vascular Disruption and Normal)	304	58.8	-
Total recruited	517	100	-

NTD: neural tube defect.

* Transverse limb defects (7 cases), bowel atresia (3 cases: duodenal atresia or ileal atresia) .

** Trisomy 21 (10 cases), trisomy 18 (2 cases), 1 case each of trisomy 13, 45 X0, XXX, triploidy, unbalanced translocation, 15q deletion, terminal deletion of chromosome 5.

Δ Skeletal dysplasia (8 cases), multiple abnormalities (6 cases), autosomal dominant polycystic kidney disease (2 cases).

Cardiac anomalies included large septal defects, hypoplastic left or right heart, Ebstein's anomaly, tetralogy of Fallot, transposition of the great arteries, left atrial isomerism, valvular atresias and double outlet right ventricle.

Other CNS anomalies included agenesis of corpus callosum, Dandy Walker spectrum, cerebellar hypoplasia, posterior fossa cyst, porencephalic cyst, severe ventriculomegaly and holoprosencephaly.

Renal anomaly: multicystic or dysplastic kidneys, lower urinary outflow tract obstruction.