The results of this study suggest that folic acid fortification is associated with significant decreases in the prevalence of spina bifida and anencephaly among non-Hispanic white and Hispanic births. The magnitude of the reduction was similar between these 2 groups and was more pronounced for spina bifida than for anencephaly. The decline in the prevalence of spina bifida and anencephaly among non-Hispanic black births did not reach statistical significance. Efforts to increase folic acid consumption for the prevention of NTDs in pregnancies among women of all races/ethnicities should be continued, and studies to identify and elucidate other risk factors for NTDs are warranted.

Objective: Data on the prevalence of birth defects and neural tube defects (NTD) in Latin America are limited. The present review summarizes NTD prevalence and time trends in Latin American countries and compares pre-and post-fortification periods to assess the impact of folic acid fortification in these countries. Design: We carried out a literature review of studies and institutional reports published between 1990 and 2010 that contained information on NTD prevalence in Latin America. Results: NTD prevalence in Latin American countries varied from 0?2 to 9?6 per 1000 live births and was influenced by methods of ascertainment. Time trends from Bogota, Costa Rica, Dominican Republic, Guatemala City, Mexico and Puerto Rico showed average annual declines of 2?5 % to 21?8 %. Pre-and postfortification comparisons were available for Argentina, Brazil, Chile, Costa Rica, Puerto Rico and Mexico. The aggregate percentage decline in NTD prevalence ranged from 33 % to 59 %.

Analyses suggest that corn masa flour fortification would have effectively targeted Mexican Americans, specifically, Mexican American women, without substantially increasing folic acid intake among other segments of the population. Such increases could reduce the disparity in total folic acid intake between Mexican American and non-Hispanic white women of childbearing age and implies that an additional NTD preventive benefit would be observed for Mexican American women.

The well-being of caregivers of children with spina bifida and other conditions is an important topic. We interviewed the primary caregivers of 98 children aged 0-17 years with spina bifida sampled from a populationbased birth defects registry in Arkansas and the caregivers of 49 unaffected children. Measures of caregiver wellbeing were compared between the groups and by level of lesion (sacral, lower lumbar, and upper lumbar/thoracic). We performed linear and logistic regression analysis to test the associations controlling for other characteristics. Among caregivers of children with spina bifida, the average number of hours of sleep was significantly less than reported by other caregivers and was associated with lesion level among children less than 7 years of age. Significant associations, often varying by child age, were also found for the caregiver's reports of lower Quality of Well-Being (QWB) score, often feeling blue, rarely feeling happy, fair or poor health, lack of leisure days, and not hosting friends, but no significant association was found with not visiting friends. The intensive long-term care required by children with spina bifida, particularly by those with higher lesions, can negatively impact caregiver health and well-being. Support for these caregivers is needed.

Neural tube defects (NTDs) are serious birth defects of the brain and spine that affect approximately 3,000 pregnancies in the United States each year and affected 404 pregnancies in Puerto Rico from 1996 to 2002. Consuming the B vitamin folic acid can reduce the incidence of NTDs 50%-70%, and recent efforts to reduce NTD rates have focused on increasing the number of childbearing-aged women who take a vitamin containing folic acid every day. As the first stage of formative research in campaign planning, two exploratory, qualitative studies were conducted in order to (a) understand the complexity of vitamin use among women in the United States and Puerto Rico and (b) serve as a foundation on which to develop national communication and education interventions. Also, this information shed light on theories that might be used to guide campaign development. Results indicated that campaign messages designed to increase folic acid use through multivitamin supplementation in the United States must address women's barriers to vitamin use (e.g., cost, time), increase women's perceived need for multivitamins (e.g., identify immediate, tangible results from taking a daily multivitamin), and address the relationship between daily food choices and the need for supplementation. Future campaign messages in Puerto Rico must focus on many of these same issues, in addition to increasing women's knowledge about when folic acid should be taken in relation to pregnancy and addressing women's perceptions that vitamins cause weight gain (an undesirable outcome for most participants). The practical and theoretical implications of these results are discussed in terms of their contribution to the development of a creative new approach to increase multivitamin consumption among women of childbearing age in the United States and Puerto Rico.

Objective: Hispanics with lower acculturation may be at higher risk for neural tube defects compared with those with higher acculturation due to lower total folic acid intake or other undetermined factors. Modelling has indicated that fortification of corn masa flour with folic acid could selectively target Mexican Americans more than other race/ethnicities. We assessed whether fortification of corn masa flour with folic acid could selectively increase folic acid intake among Mexican-American women with lower acculturation, as indicated by specific factors (language preference, country of origin, time living in the USA). Design: We used dietary intake and dietary supplement data from the National Health and Nutrition Examination Survey 2001-2008, to estimate the amount of additional total folic acid that could be consumed if products considered to contain corn masa flour were fortified at 140 mg of folic acid per 100 g of corn masa flour. Setting: USA. Subjects: Non-pregnant women aged 15-44 years (n 5369). Results: Mexican-American women who reported speaking Spanish had a relative percentage change in usual daily total folic acid intake of 30?5 (95 % CI 27?8, 33?4) %, compared with 8?3 (95 % CI 7?3, 9?4) % for Mexican-American women who reported speaking English. We observed similar results for other acculturation factors.

Background: Observational studies and clinical trials have shown conclusive evidence that periconceptional folic acid supplementation prevents up to 70 % of neural tube defects (NTD). The Honduran government wanted to implement a supplementation programme of folic acid but needed to assess the relative effects of two dosages of folic acid. Objective: To determine the effect of two dosages of folic acid on blood folate levels in Honduran female factory workers aged 18 to 49 years. Design: This was a randomized, double-blind control supplementation trial conducted in Choloma, Honduras. A total of 140 eligible women were randomly assigned to two dosage groups and followed up for 12 weeks. One group received a daily dosage of 1 mg folic acid and the other a once weekly dosage of 5 mg. Serum folate and red blood cell folate levels were determined by radioassay at baseline, 6 weeks and 12 weeks. Results: Serum folate levels increased from 6?3 (SE 0?2) to 14?9 (SE 0?6) ng/ml (P , 0?0001) in women assigned to the 1 mg/d group and from 6?9 (SE 0?3) to 10?1 (SE 0?4) ng/ml (P , 0?0001) in those assigned to the 5 mg/week group. Red blood cell folate concentrations also increased significantly in both groups, albeit more slowly. Educational level, age and BMI were not associated with the changes in serum and red blood cell folate levels during the supplementation period. However, a differential effect on serum folate levels by dosage group and time was observed. Conclusions: Although both folate supplementation regimens increased serum and red blood cell folate levels significantly among the women studied, blood folate levels that are considered to be protective of NTD were reached faster with the daily dosage of 1 mg folic acid.

Our aim was to provide a descriptive overview of how the birth defects surveillance and folic acid fortification programs were implemented in Costa Rica—through the establishment of the Registry Center for Congenital Anomalies (Centro de Registro de Enfermedades Congénitas—CREC), and fortification legislation mandates. We estimated the overall prevalence of neural tube defects (i.e., spina bifida, anencephaly and encephalocele) before and after fortification captured by CREC. Prevalence was calculated by dividing the total number of infants born with neural tube defects by the total number of live births in the country (1987–2012).A total of 1,170 newborns with neural tube defects were identified from 1987 to 2012 (1992–1995 data excluded); 628 were identified during the baseline pre-fortification period (1987–1991; 1996–1998); 191 during the fortification period (1999–2002); and 351 during the post-fortification time period (2003–2012). The overall prevalence of neural tube defects decreased from 9.8 per 10,000 live-births (95 % CI 9.1–10.5) for the pre-fortification period to 4.8 per 10,000 live births (95 % CI 4.3–5.3) for the post–fortification period. Results indicate a statistically significant (P < 0.05) decrease of 51 % in the prevalence of neural tube defects from the pre-fortification period to the post-fortification period. Folic acid fortification via several basic food sources has shown to be a successful public health intervention for Costa Rica. Costa Rica’s experience can serve as an example for other countries seeking to develop and strengthen both their birth defects surveillance and fortification programs.