Table 2

Annual rates of neural tube defects (NTDs) in Newfoundland and Labrador before folic acid supplementation (1991–1993), prior to folic acid fortification (1994–1997) and after fortification (1998–2001)

Period

No. of cases of NTDs

Total no. of births*

Rate per 1,000 births

In live births and stillbirths

In terminated pregnancies

Total


Pre-supplementation

1991–1993

50

40

90

20,711

4.35

Pre-fortification

1994–1997

53

50

103

23,592

4.37

Post-fortification

1998–2001

8

11

19

19,816

0.96


* The total number of births includes live births, stillbirths and terminations for an NTD.

Liu et al. BMC Pregnancy and Childbirth 2004 4:20   doi:10.1186/1471-2393-4-20

Open Data