Table 3.
Results of sensitivity analysis allowing the threshold level for the effect of folic acid to be as high as 800μg: Estimated annual number of pregnancies affected by spina bifida and anencephaly prevented by fortification of corn masa flour at the modeled levela
| Race/ethnicity | Estimated annual number of defects potentially prevented with corn masa flour fortificationb (95% uncertainty interval) | Estimated potential percentage decrease in prevalence with corn masa flour fortification (95% uncertainty interval) |
|---|---|---|
| Hispanic | ||
| Spina bifida | 30 (0, 100) | 7.8 (0, 23.0) |
| Anencephaly | 20 (0, 50) | 5.5 (0, 17.7) |
| Non-Hispanic white | ||
| Spina bifida | 20 (0, 130) | 2.3 (0, 17.5) |
| Anencephaly | 10 (0, 70) | 1.9 (0, 14.6) |
| Non-Hispanic black | ||
| Spina bifida | <5 (0, 30) | 1.4 (0, 15.4) |
| Anencephaly | <5 (0, 10) | 0.6 (0, 11.8) |
a
140 μg folic acid per 100 g corn masa flour
b
Estimates are rounded to the nearest 10