Possible relation between maternal consumption of added sugar and sugar-sweetened beverages and birth weight – time trends in a population

Table 3 Levels ^a of important predictors, and estimated effects of changes over time on birth weight (the regional cohort from 2001/2002 to 2009/2010, Oppland county)

	2001/2002	2009/2010	Effect on birth weight (grams)^b
	mean (95% CI)	mean (95% CI)
PP-BMI^c , kg/m ²	24.36 (24.19, 24.52)	24.85 (24.67, 25.03)	+11
GWG^d, kg (mean, 95% CI)	14.79 (14.57, 15.01)	13.86 (13.65, 14.06)	−16
Gestational age, days (mean)	279.9 (279.6, 280.2)	279.2 (279.0, 279.5)	−15
	prevalence %	prevalence %
Proportion smoking (%)	19	10	+16
Proportion diabetes^e (%)	1.0	2.6	+4
Proportion multiparity (%)	61.3	57.8	−6
Total effect of above exposures			−6

^aFor continuous variables: effect sizes from multiple regression analyses (Table 2) were multiplied by actual changes in mean values. For dichotomous variables: difference in number of exposed (calculated on basis of the mean number in 2009/2010, i.e. 1650) multiplied by the effect size of the exposure variable (Table 2), and divided by the mean number of births during 2009/2010; ^bEstimated effect on difference in birth weight from 2001/2002 to 2009/2010; ^cPre-pregnancy body mass index; ^dGestational weight gain; ^eGestational diabetes included.

ISSN: 1471-2458