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Adherence to the caffeine intake guideline during pregnancy and birth outcomes: a prospective cohort Study


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Peacock, A ORCID: 0000-0002-5705-2026, Hutchinson, D, Wilson, J, McCormack, C, Bruno, R ORCID: 0000-0001-6673-833X, Olsson, CA, Allsop, S, Elliot, E, Burns, L and Mattick, RP 2018 , 'Adherence to the caffeine intake guideline during pregnancy and birth outcomes: a prospective cohort Study' , Nutrients, vol. 10, no. 3 , pp. 1-15 , doi: 10.3390/nu10030319.

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The aims of this study were to identify: (i) the proportion of women exceeding the caffeineintake guideline (>200 mg/day) during each trimester, accounting for point of pregnancy awareness;(ii) guideline adherence trajectories across pregnancy; (iii) maternal characteristics associated withtrajectories; and (iv) association between adherence and growth restriction birth outcomes. Typicaland maximal intake per consumption day for the first trimester (T1; pre- and post-pregnancyawareness), second (T2), and third trimester (T3) were recorded for a prospective cohort of pregnantAustralian women with singleton births (n = 1232). Birth outcomes were birth weight, small forgestational age, and head circumference. For each period, participants were classified as abstinent,within (≤200 mg), or in excess (>200 mg). Latent class growth analyses identified guideline adherencetrajectories; regression analyses identified associations between adherence in each trimester andbirth outcomes. The percentage of participants who reported caffeine use declined between T1pre- and post-pregnancy awareness (89% to 68%), and increased in T2 and T3 (79% and 80%).Trajectories were: ‘low consumption’ (22%): low probability of any use; ‘within-guideline’ (70%): highprobability of guideline adherence; and ‘decreasing heavy use’ (8%): decreasing probability of excessuse. The latter two groups were more likely to report alcohol and tobacco use, and less likely to reportplanning pregnancy and fertility problems. Exceeding the guideline T1 pre-pregnancy awarenesswas associated with lower birth weight after covariate control (b = −143.16, p = 0.011). Overall,high caffeine intake pre-pregnancy awareness occurs amongst a significant minority of women,and continued excess use post-pregnancy awareness is more common where pregnancy is unplanned.Excess caffeine consumption pre-pregnancy awareness may increase the risk for lower birth weight.Increasing awareness of the guideline in pregnancy and preconception health care may be warranted.

Item Type: Article
Authors/Creators:Peacock, A and Hutchinson, D and Wilson, J and McCormack, C and Bruno, R and Olsson, CA and Allsop, S and Elliot, E and Burns, L and Mattick, RP
Keywords: caffeine; pregnancy
Journal or Publication Title: Nutrients
Publisher: MDPI Publishing
ISSN: 2072-6643
DOI / ID Number: 10.3390/nu10030319
Copyright Information:

Copyright 2018 the authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

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