Abstract
Background
Widespread use of maternal micronutrient supplements have been correlated to gestational
length and outcome in women predisposed to pre-eclampsia and preterm birth. However,
research is yet to be conducted examining the influence of micronutrient supplements
on outcomes at term in uncomplicated pregnancies.
Aim
To analyse the relationship between third trimester micronutrient supplementation
and gestation length at birth, demographics and maternal birthing outcomes in well
women at term in a South East Queensland representative population.
Methods
This research retrospectively analysed existing data pertaining to 427 uncomplicated,
pregnancies birthing at the Gold Coast and Logan Hospitals using information gathered
through the Environments for Healthy Living Study and Queensland perinatal data collection.
Data were analysed using SPSS v20 by Chi square, ANOVA and regression analysis.
Findings
Women in the third trimester taking individual zinc, folic acid or iron supplements
in combination with a multivitamin were twice as likely to birth beyond 41 completed
weeks (AOR 2.054, 95% CI 1.310–7.383, p = 0.038) then those who did not take any supplement when controlled for established
confounders. Non supplement users were found to experience a lower rate of post dates
labour and requirements for induction (AOR 0.483, 95% CI 0.278–0.840, p = 0.01).
Conclusion
Length of gestation demonstrates significant associations with micronutrient supplementation
practices. Well women consuming third trimester individual micronutrient supplements
in addition to multivitamins experienced a longer gestation at term compared to women
taking no micronutrients, increasing their risk for postdates induction of labour.
Keywords
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Article info
Publication history
Published online: August 26, 2015
Accepted:
July 28,
2015
Received in revised form:
July 27,
2015
Received:
April 13,
2015
Identification
Copyright
© 2015 Published by Elsevier Inc. All rights reserved.
