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Trajectories of maternal gestational weight gain and child cognition assessed at 5 years of age in a prospective cohort study.

Contributor(s):

Grantz, Katherine L

Publication details: 2016; ISSN:

0143-005X

Subject(s):

Online resources:

https://dx.doi.org/10.1136/jech-2014-205108

Summary: BACKGROUND: There has been concern that low gestational weight gain may cause poor fetal neurodevelopment.Summary: CONCLUSIONS: Our findings are reassuring that among normal weight women, pregnancy weight gain is not associated with child cognitive development. Further investigation should be conducted in contemporary cohorts that also include obese mothers, who are at the greatest risk for low weight gain.Summary: Copyright Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/Summary: METHODS: The association between maternal weight gain and child IQ was examined using serial antenatal weight measurements (median 12) from a prospective cohort of non-obese Scandinavian women (1986-1988). Linear mixed models with piecewise regression were used to estimate participants' (n=552) trimester-specific average rate of weight gain. Linear regression was used to assess the association between weight gain and children's (n=344) full-scale, performance and verbal IQ measured at age 5 using the Wechsler Preschool and Primary Scales of Intelligence-Revised.Summary: RESULTS: Children born to mothers who gained below versus within the 2nd trimester 2009 recommendations tended to have lower IQ scores (Full-scale: 106.6 (SD 15.1) vs 110.2 (15.2), p=0.04; verbal: 102.5 (14.3) vs 105.0 (14.9), p=0.10; performance: 109.5 (15.4) vs 113.4 (14.5), p=0.03). After adjustment there were no differences in child IQ by weight gain adequacy (full-scale: betabelow=-1.1 (95% CI -5.1 to 2.9), betaabove=1.5 (-3.8 to 6.8); verbal: betabelow=-0.2 (-3.1 to 2.6), betaabove=1.8 (-3.6 to 7.3); performance betabelow=-1.2 (-4.6 to 2.2), betaabove=1.0 (-4.6 to 6.7)). No differences were observed based on 3rd trimester adequacy. No differences were observed in IQ scores by quintile of weight gain for any trimester, particularly after adjustment for maternal IQ.

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Title notes ( 7 )

Holdings
Item type	Current library	Collection	Call number	Status	Date due	Barcode
Journal Article	MedStar Authors Catalog	Article	26759126	Available		26759126

Available online through MWHC library: 1947 - 2005

BACKGROUND: There has been concern that low gestational weight gain may cause poor fetal neurodevelopment.

CONCLUSIONS: Our findings are reassuring that among normal weight women, pregnancy weight gain is not associated with child cognitive development. Further investigation should be conducted in contemporary cohorts that also include obese mothers, who are at the greatest risk for low weight gain.

Copyright Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

METHODS: The association between maternal weight gain and child IQ was examined using serial antenatal weight measurements (median 12) from a prospective cohort of non-obese Scandinavian women (1986-1988). Linear mixed models with piecewise regression were used to estimate participants' (n=552) trimester-specific average rate of weight gain. Linear regression was used to assess the association between weight gain and children's (n=344) full-scale, performance and verbal IQ measured at age 5 using the Wechsler Preschool and Primary Scales of Intelligence-Revised.

RESULTS: Children born to mothers who gained below versus within the 2nd trimester 2009 recommendations tended to have lower IQ scores (Full-scale: 106.6 (SD 15.1) vs 110.2 (15.2), p=0.04; verbal: 102.5 (14.3) vs 105.0 (14.9), p=0.10; performance: 109.5 (15.4) vs 113.4 (14.5), p=0.03). After adjustment there were no differences in child IQ by weight gain adequacy (full-scale: betabelow=-1.1 (95% CI -5.1 to 2.9), betaabove=1.5 (-3.8 to 6.8); verbal: betabelow=-0.2 (-3.1 to 2.6), betaabove=1.8 (-3.6 to 7.3); performance betabelow=-1.2 (-4.6 to 2.2), betaabove=1.0 (-4.6 to 6.7)). No differences were observed based on 3rd trimester adequacy. No differences were observed in IQ scores by quintile of weight gain for any trimester, particularly after adjustment for maternal IQ.

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