The relative importance of maternal body mass index and glucose levels for prediction of large-for-gestational-age births

Table 1 Maternal and infant characteristics according to glucose quartiles, and the corresponding 2-h plasma glucose level

Glucose quartiles (mmol/L)	<5.7		5.7–6.4		6.5–7.2		>7.20		2-h Glucose (mmol/L)		p ^a
	n	%	n	%	n	%	n	%	mean	95 % CI
Total	2637	23.9	2783	25.3	2819	25.6	2777	25.2
Maternal age, years											<0.001
<20	80	32.5	62	25.2	63	25.6	41	16.7	6.2	6.1–6.4
20–34	2148	24.2	2288	25.8	2264	25.5	2180	24.5	6.5	6.4–6.5
≥35	409	21.6	433	22.9	492	26.0	556	29.4	6.6	6.6–6.7
Parity											0.09
1	128	23.8	134	24.9	141	26.2	135	25.1	6.5	6.4–6.5
2–3	119	24.1	128	26.0	124	25.2	122	24.7	6.5	6.4–6.5
≥4	16	24.1	15	22.5	15	23.4	20	30.0	6.6	6.5–6.7
Smoker											<0.001
No	2220	23.4	2408	25.4	2430	25.6	2424	25.6	6.5	6.5–6.5
Yes	341	27.2	309	24.6	333	26.6	271	21.6	6.3	6.3–6.4
Maternal BMI, kg/m²											<0.001
<18.5	50	25.6	50	25.6	50	25.6	45	23.1	6.4	6.3–6.6
18.5–24	1496	25.1	1569	26.3	1542	25.9	1351	22.7	6.4	6.4–6.4
25.0–29.9	585	22.0	641	24.1	687	25.9	743	28.0	6.6	6.5–6.6
30–34.9	182	20.8	187	21.4	223	25.5	281	32.2	6.6	6.6–6.7
≥35	83	20.1	103	25.0	93	22.6	133	32.3	6.8	6.7–6.9
Gestational age, weeks											0.006
<37	117	20.0	148	25.3	153	26.2	167	28.5	6.7	6.5–6.8
37–41 + 6	2345	24.0	2472	25.3	2502	25.6	2452	25.1	6.5	6.4–6.5
≥42 + 0	175	26.5	163	24.7	164	24.8	158	23.9	6.4	6.3–6.5
Weight for gestational age											<0.001
SGA	69	23.2	80	26.9	68	22.9	80	26.9	6.5	6.4–6.7
AGA	2446	24.2	2577	25.5	2578	25.6	2495	24.7	6.5	6.4–6.5
LGA	115	20.1	110	19.2	156	27.3	191	33.4	6.7	6.6–6.9
Infant gender											0.9
Male	1407	24.5	1415	24.5	1437	25.0	1479	25.8	6.5	6.4–6.5
Female	1228	23.4	1359	25.8	1379	26.2	1292	24.6	6.5	6.5–6.5

BMI body mass index, CI confidence interval, SGA small-for-gestational-age, AGA adequate-for-gestational-age, LGA large-for-gestational-age
^ap-values obtained by non-parametric tests (Kruskal-Wallis) for difference in glucose level between the specified groups

ISSN: 1471-2393