1. Bailey LB, Gregory JF 3rd. Folate metabolism and requirements. J Nutr. 1999;129(4):779-82.
2. 日本産科婦人科学会. 産婦人科 診療ガイドライン-産科編 2017-. http://www.jsog.or.jp/uploads/files/medical/about/gl_sanka_2017.pdf. (2020/4/1 access).
3. Mills JL, McPartlin JM, Kirke PN, et al. Homocysteine metabolism in pregnancies complicated by neural-tube defects. Lancet. 1995;345(8943):149-51.
4. Werler MM, Hayes C, Louik C, et al. Multivitamin supplementation and risk of birth defects. Am J Epidemiol. 1999;150(7):675-82.
5. Bibbins-Domingo K, Grossman DC, Curry SJ, et al. Folic Acid Supplementation for the Prevention of Neural Tube Defects: US Preventive Services Task Force Recommendation Statement. JAMA. 2017;317(2):183-9.
6. Surén P, Roth C, Bresnahan M, et al. Association between maternal use of folic acid supplements and risk of autism spectrum disorders in children. JAMA. 2013;309(6):570- 7.
7. Li M, Li S, Chavarro JE, et al. Prepregnancy Habitual Intakes of Total, Supplemental, and Food Folate and Risk of Gestational Diabetes Mellitus: A Prospective Cohort Study. Diabetes Care. 2019;42(6):1034-41.
8. Bailey LB. Dietary reference intakes for folate: the debut of dietary folate equivalents. Nutr Rev. 1998;56(10):294-9.
9. Global fortification data exchange. https://fortificationdata.org/. (2020/4/1 access).
10. Food and Drug Administration. Food Standards: Amendment of Standards of Identity For Enriched Grain Products to Require Addition of Folic Acid. https://www.govinfo.gov/content/pkg/FR-1996-03-05/pdf/96-5014.pdf. (2020/4/1 access).
11. Honein MA, Paulozzi LJ, Mathews TJ, et al. Impact of folic acid fortification of the US food supply on the occurrence of neural tube defects. JAMA. 2001;285(23):2981-6.
12. De Wals P, Tairou F, Van Allen MI, et al. Reduction in neural-tube defects after folic acid fortification in Canada. N Engl J Med. 2007;357(2):135-42.
13. 厚生省(現 厚生労働省). 神経管閉鎖障害の発症リスク低減のための妊娠可能な年齢の女性等に対する葉酸の摂取に係る適切な情報提供の推進について. https://www.mhlw.go.jp/www1/houdou/1212/h1228-1_18.html. (2020/4/1 access).
14. 厚生労働省. 母子健康手帳の改正について. https://www.mhlw.go.jp/shingi/0111/s1130-1.html. (2020/4/1 access).
15. Kondo A, Morota N, Date H, et al. Awareness of folic acid use increases its consumption, and reduces the risk of spina bifida. Br J Nutr. 2015;114(1):84-90.
16. 厚生労働省. 平成 27 年国民健康・栄養調査報告. https://www.mhlw.go.jp/bunya/kenkou/eiyou/dl/h27-houkoku-04.pdf. (2020/7/13 access).
17. 厚生労働省. 平成 28 年国民健康・栄養調査報告. https://www.mhlw.go.jp/bunya/kenkou/eiyou/dl/h28-houkoku-04.pdf. (2020/7/13 access).
18. 厚生労働省. 平成 29 年国民健康・栄養調査報告. https://www.mhlw.go.jp/content/000451759.pdf. (2020/4/1 access).
19. Atsuo Kondo, Takuya Matsuo, Nobuhito Morota, et al. Neural Tube Defects: Risk Factors and Preventive Measures. Congenit Anom (Kyoto). 2017;57(5):150-6.
20. Ishikawa T, Obara T, Nishigori H, et al. Update on the prevalence and determinants of folic acid use in Japan evaluated with 91,538 pregnant women: the Japan Environment and Children's Study. J Matern Fetal Neonatal Med. 2020;33(3):427-36.
21. 日本先天異常学会. 葉酸サプリメントの摂取により神経管閉鎖障害の発症リスクを減らしましょう. http://jts.umin.jp/new/JTS_message2016.pdf. (2020/4/1 access).
22. 厚生労働省. 「日本人の食事摂取基準(2015 年版)策定検討会」報告書. https://www.mhlw.go.jp/file/05-Shingikai-10901000-Kenkoukyoku-Soumuka/0000067134.pdf. (2020/4/1 access).
23. 原梓, 小原拓, 目時弘仁, ほか. 妊娠前後における女性のサプリメント摂取:BOSHI 研究. 医薬品相互作用研究. 2011;35(1):11-6.
24. 鈴木美穂, 鈴木孝太, 由田克士. 妊娠初期における推奨体重増加量の知識と総エネルギー摂取量, 栄養素およびサプリメントの使用状況の関連. 東海公衆衛生雑誌. 2019;7(1):151-7.
25. 石井真理子, 中島研, 櫛田賢次, ほか. 妊娠と薬情報センター相談者を対象とした妊婦の葉酸服用率に関する調査. 医薬品情報学. 2009;11(2):107-14.
26. F Mathews, P Yudkin, A Neil. Folates in the Periconceptional Period: Are Women Getting Enough?. Br J Obstet Gynaecol. 1998;105(9):954-9.
27. C Bower, S Knowles, D Nicol. Changes in Folate Supplementation, and in Serum and Red Cell Folate Levels in Antenatal Patients Over the Course of a Health Promotion Project for the Prevention of Neural Tube Defects. Aust N Z J Obstet Gynaecol. 1997;37(3):267-71.
28. Nilsen RM, Vollset SE, Gjessing HK, et al. Patterns and predictors of folic acid supplement use among pregnant women: the Norwegian Mother and Child Cohort Study. Am J Clin Nutr. 2006;84(5):1134-41.
29. Nilsen RM, Leoncini E, Gastaldi P, et al. Prevalence and determinants of preconception folic acid use: an Italian multicenter survey. Ital J Pediatr. 2016;42(1):65.
30. Xing XY, Tao FB, Hao JH, et al. Periconceptional folic acid supplementation among women attending antenatal clinic in Anhui, China: data from a population-based cohort study. Midwifery. 2012;28(3):291-7.
31. Timmermans S, Jaddoe VW, Mackenbach JP, et al. Determinants of folic acid use in early pregnancy in a multi-ethnic urban population in The Netherlands: the Generation R study. Prev Med. 2008;47(4):427-32.
32. Teixeira JA, Castro TG, Wall CR, et al. Determinants of folic acid supplement use outside national recommendations for pregnant women: results from the Growing Up in New Zealand cohort study. Public Health Nutr. 2018;21(12):2183-92.
33. Tort J, Lelong N, Prunet C, et al. Maternal and health care determinants of preconceptional use of folic acid supplementation in France: results from the 2010 National Perinatal Survey. BJOG. 2013;120(13):1661-7.
34. Ha AVV, Zhao Y, Binns CW, et al. Low Prevalence of Folic Acid Supplementation during Pregnancy: A Multicenter Study in Vietnam. Nutrients. 2019;11(10). pii: E2347.
35. 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(1):203-10.
36. Paulik E, Császár J, Kozinszky Z, et al. Preconceptional and prenatal predictors of folic acid intake in Hungarian pregnant women. Eur J Obstet Gynecol Reprod Biol. 2009;145(1):49-52.
37. Ogundipe O, Hoyo C, Østbye T, et al. Factors associated with prenatal folic acid and iron supplementation among 21,889 pregnant women in Northern Tanzania: a cross-sectional hospital-based study. BMC Public Health. 2012;12:481.
38. Forster DA, Wills G, Denning A, et al. The use of folic acid and other vitamins before and during pregnancy in a group of women in Melbourne, Australia. Midwifery. 2009;25(2):134-46.
39. De Santis M, Quattrocchi T, Mappa I, et al. Folic acid use in planned pregnancy: an Italian survey. Matern Child Health J. 2013;17(4):661-6.
40. Aoun A, Faddoul L, El Jabbour F, et al. Are the Level of Knowledge and Practices of Pregnant Women Regarding Folic Acid Supplementation Still Inadequate? A Cross- Sectional Study in a Middle Eastern Urban Setting. J Diet Suppl. 2018;15(5):692-703.
41. Kurzawińska G, Magiełda J, Romała A, et al. Demographic factors determining folic acid supplementation in pregnant and childbearing age women. Ginekol Pol. 2018;89(4):211-6.
42. Kinnunen TI, Sletner L, Sommer C, et al. Ethnic differences in folic acid supplement use in a population-based cohort of pregnant women in Norway. BMC Pregnancy Childbirth. 2017;17(1):143.
43. Malek L, Umberger W1, Makrides M, et al. Poor adherence to folic acid and iodine supplement recommendations in preconception and pregnancy: a cross-sectional analysis. Aust N Z J Public Health. 2016;40(5):424-9.
44. Lolkje T W de Jong-van den Berg. Monitoring of the Folic Acid Supplementation Program in the Netherlands. Food Nutr Bull. 2008;29(2 Suppl):S210-3.
45. Gwendolyn P Quinn, Kimberlea Hauser, Bethany A Bell-Ellison, et al. Promoting Pre-Conceptional Use of Folic Acid to Hispanic Women: A Social Marketing Approach. Matern Child Health J. 2006;10(5):403-12.
46. Araceli Busby, Lenore Abramsky, Helen Dolk, et al. Preventing Neural Tube Defects in Europe: A Missed Opportunity. Reprod Toxicol. 2005;20(3):393-402.
47. 原梓, 大久保孝義, 小原拓, ほか. サプリメン卜摂取者の人口学的特性及び生活習慣に関する研究-大迫研究. 医薬品相互作用研究. 2009;33(1):7-13.
48. 佐藤陽子, 千葉剛, 梅垣敬三. 女子大学生におけるパーソナリティ特性とサプリメント利用行動. 日本公衆衛生雑誌. 2018;65(6):300-7.
49. Else-Quest NM, Hyde JS, Goldsmith HH, et al. Gender differences in temperament: a meta-analysis. Psychol Bull. 2006;132(1):33-72.
50. Feingold A. Gender differences in personality: a meta-analysis. Psychol Bull. 1994;116(3):429-56.
51. Kuriyama S, Yaegashi N, Nagami F, et al. The Tohoku Medical Megabank Project: Design and Mission. J Epidemiol. 2016;26(9):493-511.
52. Kuriyama S, Metoki H, Kikuya M, et al. Cohort Profile: Tohoku Medical Megabank Project Birth and Three-Generation Cohort Study (TMM BirThree Cohort Study): Rationale, Progress and Perspective. Int J Epidemiol. 2019. pii: dyz169.
53. Watanabe S, Tsugane S, Sobue T, et al. Study design and organization of the JPHC study. Japan Public Health Center-based Prospective Study on Cancer and Cardiovascular Diseases. J Epidemiol. 2001;11(6 Suppl):S3-7.
54. Eysenck SBG, Eysenck HJ, Barrett P. A revised version of the psychoticism scale. Pers Individ Dif. 1985;6(1):21-9.
55. Hosokawa T, Ohyama M. Reliability and Validity of a Japanese Version of the Short- Form Eysenck Personality Questionnarie-Revised. Psychol Rep. 1993;72(3):823-32.
56. de Jong-van den Berg LT, de Walle HE, van der Pal-de Bruin KM, et al. Increasing awareness of and behaviour towards periconceptional folic acid consumption in The Netherlands from 1994 to 1995. Eur J Clin Pharmacol. 1998;54(4):329-31.
57. Green-Raleigh K, Carter H, Mulinare J, et al. Trends in folic Acid awareness and behavior in the United States: the Gallup Organization for the March of Dimes Foundation surveys, 1995-2005. Matern Child Health J. 2006;10(5 Suppl):S177-82.
58. Chan AC, van Essen P, Scott H, et al. Folate awareness and the prevalence of neural tube defects in South Australia, 1966-2007. Med J Aust. 2008;189(10):566-9.
59. 財務省. たばこ事業法. https://elaws.e-gov.go.jp/search/elawsSearch/elaws_search/lsg0500/detail?lawId=360M50000040005. (2020/6/24 access)
60. 日本総合研究所. 平成 30 年度子ども・子育て支援推進調査研究事業妊娠・出産に当たっての適切な栄養・食生活に関する調査報告書. https://www.jri.co.jp/MediaLibrary/file/column/opinion/pdf/190331_ninsanpushoku.pdf. (2020/4/1 access)
61. Tsubota-Utsugi M, Satoh M, Hosaka M, et al. Personality traits as predictors of decline in higher-level functional capacity over a 7-year follow-up in older adults: the Ohasama study. Tohoku J Exp Med. 2014;234(3):197-207.
62. Kakizaki M, Kuriyama S, Sato Y, et al. Personality and body mass index: a cross- sectional analysis from the Miyagi Cohort Study. J Psychosom Res. 2008;64(1):71-80.
63. Arai S, Nakaya N, Kakizaki M, et al. Personality and gastric cancer screening attendance: a cross-sectional analysis from the Miyagi Cohort Study. J Epidemiol. 2009;19(1):34-40.
64. Hilton JJ. A comparison of folic acid awareness and intake among young women aged 18-24 years. J Am Acad Nurse Pract. 2007;19(10):516-22.