title: The association of time in the US and diet during pregnancy in low-income women of Mexican descent.
abstract: This study compared nutritional intake during pregnancy among women of Mexican descent according to country of birth (US vs. Mexico) and, for Mexico-born women, according to number of years lived in the US (<or=5 years, 6-10 years, >or= 11 years). A 72-item food frequency questionnaire (FFQ) was used to assess dietary intake in 474 pregnant Mexico-born immigrants and US-born Mexican-Americans. Mexico-born women had significantly higher intakes of calories (P = 0.02), fibre (P < 0.001), vitamin A (P < 0.001), vitamin C (P = 0.03), vitamin E (P < 0.01), folate (P < 0.01), calcium (P < 0.001) and zinc (P = 0.02) from their diets than US-born women. Intakes of all nutrients except vitamin C and zinc remained significantly higher in Mexico-born women when nutrients from both diet and vitamin supplements were considered. Among Mexico-born women, increasing years of residence in the US was associated with lower intake of calories (P(trend) < 0.01), fibre (P(trend) < 0.01), folate (P(trend) = 0.03), iron (P(trend) = 0.05) and zinc (P(trend) = 0.03), although only the trend for iron remained significant when vitamin supplement sources were included. A large percentage of women had inadequate intake of vitamin E (58%), folate (61%), iron (77%) and zinc (47%) from their diets during pregnancy and these rates were higher in US-born women than Mexico-born women.
authors.affiliation: School of Public Health, University of California, Berkeley, CA 94720-7390, USA.
authors.forename: Kim
authors.initials: K
authors.lastname: Harley
authors.forename: Brenda
authors.initials: B
authors.lastname: Eskenazi
authors.forename: Gladys
authors.initials: G
authors.lastname: Block
mesh_terms: D000293:Adolescent; D000328:Adult; D049628:Body Size / Q000208:ethnology; D002136:Calcium, Dietary / Q000008:administration & dosage; D004032:Diet; D004043:Dietary Fiber / Q000008:administration & dosage; D019587:Dietary Supplements; D002149:Energy Intake; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage; D005502:Food; D006801:Humans; D007182:Income; D007501:Iron / Q000008:administration & dosage; D017058:Mexican Americans; D008800:Mexico / Q000208:ethnology; D018977:Micronutrients / Q000008:administration & dosage; D011247:Pregnancy / Q000208:ethnology*; D012959:Socioeconomic Factors; D013997:Time Factors; D014815:Vitamins / Q000008:administration & dosage; D015032:Zinc / Q000008:administration & dosage
chemical_list: D002136:Calcium, Dietary; D004043:Dietary Fiber; D018977:Micronutrients; D014815:Vitamins; D005492:Folic Acid; D007501:Iron; D015032:Zinc