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. 2020 May 20;45(1):247–257. doi: 10.1038/s41366-020-0596-5

Table 3.

Adjusted associations of maternal mid-gestation FPG with birthweight and birthweight z-score stratified by placental inositol tertiles.

FPG (mmol/L) Birthweight (g)a Birthweight z-score (SDs)b
P for interactionc 0.028 0.012
Tertiles of inositol Inositol z-score, range βd (95% CI) P value βd (95% CI) P value
Whole sample
 Lowest (n = 245e) −3.337, −0.470 174.2 (81.2, 267.2) <0.001 0.6 (0.3, 0.9) <0.001
 Middle (n = 240e) −0.469, 0.336 202.0 (103.8, 300.1) <0.001 0.7 (0.4, 1.0) <0.001
 Highest (n = 239e) 0.337, 3.990 81.0 (−21.2, 183.2) 0.120 0.2 (−0.1, 0.6) 0.177
Cases of normoglycaemiaf
 Lowest (n = 189e) −3.337, −0.470 175.0 (54.4, 295.6) 0.005 0.6 (0.2, 1) 0.003
 Middle (n = 198e) −0.469, 0.336 136.9 (1.1, 272.7) 0.048 0.5 (0, 0.9) 0.041
 Highest (n = 199e) 0.337, 3.914 114.0 (−24.1, 252) 0.105 0.3 (−0.1, 0.7) 0.193
Cases of gestational diabetes (GDM)g
 Lowest (n = 56e) −3.096, −0.481 239.3 (64.0, 414.6) 0.009 0.9 (0.3, 1.5) 0.002
 Middle (n = 42e) −0.436, 0.315 181.9 (4.3, 359.4) 0.045 0.6 (0, 1.1) 0.040
 Highest (n = 40e) 0.355, 3.990 −78.9 (−308.2, 150.5) 0.488 −0.4 (−1.2, 0.4) 0.280

FPG fasting plasma glucose, GDM gestational diabetes mellitus.

aAdjusted for maternal age, ethnicity, parity, pre-pregnancy BMI, tobacco smoke exposure, gestational age, and neonatal sex.

bAdjusted for maternal age, ethnicity, parity, pre-pregnancy BMI, and tobacco smoke exposure.

cInteraction between placental inositol tertiles and FPG on birthweight/birthweight z-score with adjustment for covariates in the whole sample.

dBeta (β) represents the change in g or SDs per mmol/L increase in FPG.

eOnly cases with full data sets available are presented.

fDefined as those with normal oral glucose tolerance test by the WHO 1999 criteria.

gAbnormal oral glucose tolerance test by the WHO 1999 criteria (FPG ≥ 7.0 mmol/L or 2hPG ≥ 7.8 mmol/L).