Table 3.

The Influence of Maternal Pregnancy Complications and Delivery on Neonatal TSH

	Mean TSH (mIU/L)±SD	r2	1 P-value	r2	2 P-value
Gestational diabetes N=660		0.003	0.14	0.057	0.33
No (N=618)	5.6±3.6
Yes (N=42)	6.5±4.2
Chronic hypertension N=429		<0.001	0.74	0.068	0.42
No (N=389)	5.6±3.6
Yes (N=40)	5.5±2.9
Gestational hypertension N=591		0.004	0.15	0.057	0.28
No (N=553)	5.7±3.6
Yes (N=38)	6.8±4.6
Preeclampsia N=662		0.011	7x10−3	0.071	2x10−3
No (N=489)	5.4±3.4
Yes (N=173)	6.4±4.3
HELLP syndrome N=391		<0.001	0.61	0.058	0.35
No (N=356)	5.9±3.8
Yes (N=35)	6.1±3.6
Oligohydraminos N=309		0.002	0.40	0.069	0.10
No (N=276)	5.8±3.7
Yes (N=33)	6.3±3.5
Polyhydraminos N=298		0.013	0.05	0.082	0.03
No (N=288)	5.9±3.7
Yes (N=10)	4.1±3.3
Type of Delivery N=695		<0.001	0.92	0.059	0.31
Vaginal (N=315)	5.8±3.8
C-section (N=380)	5.7±3.6
Type of Labor N=671		0.024	3x10−4*	0.070	3x10−3
No labor (N=159)	6.1±3.8
Induced (N=98)	7.1±4.8
Spontaneous (N=414)	5.2±3.2
Rupture of membranes N=603		0.001	0.35	0.058	0.44
Spontaneous (N=290)	5.4±3.2
Artificial (N=313)	5.9±3.9
Placental abruption N=502		0.003	0.23	0.049	0.62
No (N=459)	5.7±3.6
Yes (N=43)	5.1±3.0
Chorioamnionitis N=574		0.009	0.03	0.062	0.16
No (N=529)	5.9±3.7
Yes (N=45)	4.8±3.0
Group B streptococcus N=410		<0.001	0.74	0.062	0.61
No (N=316)	5.9±3.9
Yes (N=94)	5.8±3.5

¹P-value: single variable one-way ANOVA.

²P-value: ANOVA adjusted for gestational age.

^*Bartlett’s test for equal variances was p=0.02.