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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) |
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| Period |
No. of cases of NTDs |
Total no. of births* |
Rate per 1,000 births |
||
| In live births and stillbirths |
In terminated pregnancies |
Total |
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|
|
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| Pre-supplementation |
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| 1991–1993 |
50 |
40 |
90 |
20,711 |
4.35 |
| Pre-fortification |
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| 1994–1997 |
53 |
50 |
103 |
23,592 |
4.37 |
| Post-fortification |
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| 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 |
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