Patterns and predictors of folic acid supplement use among pregnant women: The Norwegian mother and child cohort study

American Journal of Clinical Nutrition

Volumn 84, Issue 5, 2006, Pages 1134-1141

  Nilsen, Roy M ^a   Vollset, Stein E ^a,b   Gjessing, Håkon K ^a   Magnus, Per ^b   Meltzer, Helle M ^b   Haugen, Margaretha ^b   Ueland, Per M ^a  

^a UNIVERSITY OF BERGEN   (Norway)

^b NORWEGIAN INSTITUTE OF PUBLIC HEALTH   (Norway)

Author keywords

Cohort study; Folic acid; Neural tube defects; Predictors; Pregnancy; Supplements

Indexed keywords

FOLIC ACID;

ADULT; ARTICLE; COHORT ANALYSIS; CONTROLLED STUDY; EDUCATION; FEMALE; GESTATION PERIOD; HUMAN; HUMAN EXPERIMENT; INFERTILITY THERAPY; NORWAY; PARITY; PREGNANCY; PREGNANT WOMAN; PREVALENCE; RISK FACTOR; SOCIOECONOMICS; VITAMIN SUPPLEMENTATION;

EID: 33750902738     PISSN: 00029165     EISSN: None     Source Type: Journal    
DOI: 10.1093/ajcn/84.5.1134     Document Type: Article

References (32)

1. Smithells RW, Sheppard S, Schorah CJ, et al. Possible prevention of neural-tube defects by periconceptional vitamin supplementation. Lancet 1980;1:339-40.
2. Berry RJ, Li Z, Erickson JD, et al. Prevention of neural-tube defects with folic acid in China. China-U.S. Collaborative Project for Neural Tube Defect Prevention. N Engl J Med 1999;341:1485-90.
3. Czeizel AE, Dudas I. Prevention of the first occurrence of neural-tube defects by periconceptional vitamin supplementation. N Engl J Med 1992;327:1832-5.
4. Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. MRC Vitamin Study Research Group. Lancet 1991;338:131-7.
5. Botto LD, Moore CA, Khoury MJ, Erickson JD. Neural-tube defects. N Engl J Med 1999;341:1509-19.
6. Botto LD, Lisi A, Robert-Gnansia E, et al. International retrospective cohort study of neural tube defects in relation to folic acid recommendations: are the recommendations working? BMJ 2005;330:571-3.
7. Daltveit AK, Vollset SE, Lande B, Oien H. Changes in knowledge and attitudes of folate, and use of dietary supplements among women of reproductive age in Norway 1998-2000. Scand J Public Health 2004;32:264-71.
8. Braekke K, Staff AC. Periconceptional use of folic acid supplements in Oslo. Acta Obstet Gynecol Scand 2003;82:620-7.
9. Brevik A, Vollset SE, Tell GS, et al. Plasma concentration of folate as a biomarker for the intake of fruit and vegetables: the Hordaland Homocysteine Study. Am J Clin Nutr 2005;81:434-9.
10. de Jong-Vanden Berg LT, Hernandez-Diaz S, Werler MM, Louik C, Mitchell AA. Trends and predictors of folic acid awareness and periconceptional use in pregnant women. Am J Obstet Gynecol 2005;192:121-8.
11. McDonnell R, Johnson Z, Doyle A, Sayers G. Determinants of folic acid knowledge and use among antenatal women. J Public Health Med 1999;21:145-9.
12. Sen S, Manzoor A, Deviasumathy M, Newton C. Maternal knowledge, attitude and practice regarding folic acid intake during the periconceptional period. Public Health Nutr 2001;4:909-12.
13. Vollset SE, Gjessing HK, Tandberg A, et al. Folate supplementation and twin pregnancies. Epidemiology 2005;16:201-5.
14. Cleves MA, Hobbs CA, Collins HB, Andrews N, Smith LN, Robbins JM. Folic acid use by women receiving routine gynecologic care. Obstet Gynecol 2004;103:746-53.
15. Knudsen VK, Orozova-Bekkevold I, Rasmussen LB, Mikkelsen TB, Michaelsen KF, Olsen SF. Low compliance with recommendations on folic acid use in relation to pregnancy: is there a need for fortification? Public Health Nutr 2004;7:843-50.
16. Scholl TO, Johnson WG. Folic acid: influence on the outcome of pregnancy. Am J Clin Nutr 2000;71(suppl):1295S-303S.
17. Magnus P, Irgens LM, Haug K, et al. The Norwegian Mother and Child Cohort Study. Int J Epidemiol (in press).
18. Irgens LM. The Medical Birth Registry of Norway. Epidemiological research and surveillance throughout 30 years. Acta Obstet Gynecol Scand 2000;79:435-9.
19. Robbins AS, Chao SY, Fonseca VP. What's the relative risk? A method to directly estimate risk ratios in cohort studies of common outcomes. Ann Epidemiol 2002;12:452-4.
20. Rothman K, Greenland S. Measures of effect and measures of association. In: Rothman K, Greenland S, ed. Modern epidemiology. Philadelphia, PA: Lippincott-Raven Publishers, 1998:47-64.
21. Statistics Norway. StatBank Norway: education level in the population (1983-2004). Internet: http://www.ssb.no/english/ (accessed 4 July 2006).
22. Medical Birth Registry of Norway, Norwegian Institute of Public Health. Births in Norway: annual report 2001-2002. Bergen, Norway: Medical Birth Registry of Norway, 2004.
23. Carmichael SL, Shaw GM, Yang W, et al. Correlates of intake of folic acid-containing supplements among pregnant women. Am J Obstet Gynecol 2006;194:203-10.
24. Morrell MJ. Folic acid and epilepsy. Epilepsy Curr 2002;2:31-4.
25. Centers for Disease Control and Prevention (CDC). Folate status in women of childbearing age-United States, 1999. MMWR Morb Mortal Wkly Rep 2000;49:962-5.
26. Ray JG, Vermeulen MJ, Boss SC, Cole DE. Increased red cell folate concentrations in women of reproductive age after Canadian folic acid food fortification. Epidemiology 2002;13:238-40.
27. Hertrampf E, Cortes F, Erickson JD, et al. Consumption of folic acid-fortified bread improves folate status in women of reproductive age in Chile. J Nutr 2003;133:3166-9.
28. Werler MM, Louik C, Mitchell AA. Achieving a public health recommendation for preventing neural tube defects with folic acid. Am J Public Health 1999;89:1637-40.
29. Centers for Disease Control and Prevention (CDC). Use of vitamins containing folic acid among women of childbearing age-United States, 2004. MMWR Morb Mortal Wkly Rep 2004;53:847-50.
30. Charles DH, Ness AR, Campbell D, Smith GD, Whitley E, Hall MH. Folic acid supplements in pregnancy and birth outcome: re-analysis of a large randomised controlled trial and update of Cochrane review. Paediatr Perinat Epidemiol 2005;19:112-24.
31. Hernandez-Diaz S, Werler MM, Louik C, Mitchell AA. Risk of gestational hypertension in relation to folic acid supplementation during pregnancy. Am J Epidemiol 2002;156:806-12.
32. Scholl TO, Hediger ML, Schall JI, Khoo CS, Fischer RL. Dietary and serum folate: their influence on the outcome of pregnancy. Am J Clin Nutr 1996;63:520-5.