Details of Publication 733 for Project A368:

Gresham E, Byles J, Loxton D, Mishra G & Hure A. Does diet quality predict maternal or infant outcomes? , 2013; : 56

Maternal diet quality has been associated with several favourable pregnancy and birth outcomes. However, there are very few studies in this area. This study aims to test whether diet quality before or during pregnancy predicts gestational hypertension or gestational diabetes for the mother, or preterm birth or low birth weight for the infant.Self-reported dietary data were collected prospectively for the Australian Longitudinal Study on Women’s Health. A sub-sample of 969 women, aged 25 to 30 years, who completed the Dietary Questionnaire for Epidemiological Studies up to 6 months before, or during a singleton pregnancy, were included. Diet quality was calculated according to the Australian Recommended Food Score (ARFS) method, which allots points for regular consumption of vegetables, fruits, protein foods, grains, dairy and fats.Eleven percent of women self-reported gestational hypertension, 3% gestational diabetes mellitus, 9% preterm births and 4% low birth weight babies. The preconception (n=386) and pregnancy (n=583) groups were combined as no significant differences were detected for total and component ARFS scores. Women with hypertension, compared to those without had lower scores for the total ARFS [mean ±SD: 27.3 ±8.8 vs. 29.6 ±8.6, p=0.01] and grain component [3.9 ±2.0 vs. 4.7 ±1.9, p < 0.001]. Both total ARFS [coefficient (95% CI): -0.15 (-0.27, -0.02), p=0.02] and grain component [-0.03 (-0.05, -0.01), p=0.02] remained predictors of gestational hypertension, after adjustment for weight, smoking, education, parity and maternal age in logistic regressions. There were no other significant effects on any other outcome.Dietary intervention to improve women's diet quality before or during pregnancy, may help to reduce the occurence of gestational hypertension, but does not show any association with other maternal or infant outcomes.

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