Table 4.

The association of GDM and HDP diagnosed at different times with gestational week of delivery and birth weight.

Group		N	Mean ± SD	Model 1 a		Model 2 b
				β (se)	P	β (se)	P
GDM	HDP	Gestational week of delivery
No	No	10562	38.98 ± 1.56	ref	–	ref	–
Yes	No	2317	38.75 ± 1.70	-0.05 (0.04)	0.1931	-0.16 (0.04)	<0.0001
No	≤20th week	130	38.28 ± 2.07	-0.53 (0.14)	0.0002	-0.55 (0.15)	0.0002
No	21-27th week	52	38.29 ± 1.85	-0.96 (0.24)	0.0001	-1.05 (0.25)	<0.0001
No	≥28th week	43	37.88 ± 3.20	-0.48 (0.10)	<0.0001	-0.40 (0.10)	0.0001
Yes	≤20th week	18	37.22 ± 3.19	-0.15 (0.22)	0.5033	-0.41 (0.23)	0.0702
Yes	21-27th week	285	38.53 ± 1.63	-1.57 (0.43)	0.0002	-1.73 (0.43)	0.0001
Yes	≥28th week	115	38.63 ± 1.35	-0.26 (0.16)	0.1003	-0.33 (0.16)	0.0366
GDM	HDP	Birth weight cd
No	No	10562	3314.35 ± 451.64	ref.	–	ref.	–
Yes	No	2317	3317.26 ± 503.71	4.63 (9.44)	0.6238	36.79 (9.33)	0.0001
No	≤20th week	130	3185.54 ± 563.15	-139.63 (42.05)	0.0009	-137.25 (41.08)	0.0008
No	21-27th week	43	3053.49 ± 782.53	-105.85 (45.59)	0.0203	-97.99 (44.53)	0.0278
No	≥28th week	285	3208.79 ± 536.98	-66.14 (25.26)	0.0088	-96.23 (24.71)	0.0001
Yes	≤20th week	52	3200.58 ± 570.57	-130.45 (64.35)	0.0426	-70.51 (62.90)	0.2624
Yes	21-27th week	18	3025.88 ± 973.00	-189.57 (76.97)	0.0138	-110.74 (75.26)	0.1412
Yes	≥28th week	115	3330.17 ± 544.26	19.31 (38.79)	0.6186	39.42 (37.90)	0.2983

^aModel 1 was adjusted for age, gravidity, history of 3 or more abortions, gestational age at OGTT, BMI at first visit, pregnancy season and education.

^bModel 2 was adjusted variable1s in Model 1 and further adjusted for gestational weight gain.

^cModel 1 was adjusted for age, delivery gestational age, gravidity, history of 3 or more abortions, gestational age at OGTT, BMI at first visit, pregnancy season and education.

^dModel 2 was adjusted variable1s in Model 1 and further adjusted for gestational weight gain.

HDP, hypertensive disorders complicating pregnancy; GDM, gestational diabetes mellitus.