Magnitude of Neural Tube Defects and Associated Risk Factors at Three Teaching Hospitals in Addis Ababa, Ethiopia

Table 4

Characteristics of neural tube defects, Addis Ababa University teaching hospitals, Ethiopia, February 1 to August 30, 2016 .

Variables	Frequency	Percentage	Remark
Types of NTDs
Anencephaly	60	54.1
Spina bifida	45	40.5
Encephalocele	6	5.4
Time at diagnosis
Antenatal	96	86.5
At birth	15	13.5
US scan done for at birth diagnosis
Yes	13	86.7
No	2	13.3
Gestational age at Diagnosis (weeks)			Mean = 25 (±8)
<24	47	42.3
24–27^6/7	18	16.2
28–33^6/7	12	10.8
34–36^6/7	8	7.2
≥37	11	9.9
Gestational age at Delivery/expulsion (weeks)			Mean = 29 (±9); Median = 27.7
<24	35	31.5
24–27^6/7	21	18.9
28–33^6/7	15	13.5
34–36^6/7	6	5.4
≥37	34	30.6
Mode of delivery/termination
Spontaneous vaginal delivery	38	34.2
Induced vaginal delivery	58	52.3
Cesarean section	8	7.2
Destructive vaginal delivery	7	6.3
Admission to delivery/expulsion in days			Mean = 3.2 (±2.2); Median = 3
1 day	40	36.0
2–4 days	44	39.6
≥5 days	27	24.3

Ultrasound.