High-Normal Preconception TSH Levels Have No Adverse Effects on Reproductive Outcomes in Infertile Women Undergoing the First Single Fresh D5 Blastocyst Transfer

Table 4

The obstetric outcomes of the women undergoing the first single D5 blastocyst transfer.

		Low TSH group (n = 247)	High-normal TSH group (n = 195)	P
Gestational age (day)		272.6 (10.27)	273.0 (12.72)	0.622
Gestational age (days)	Single	273.4 (8.8)	274.3 (10.1)	0.301
Gestational age (days)	Twin	246.8 (18.7)	250.1 (15.6)	0.732
Preterm birth	Single	15 (75.0%)	13 (81.3%)	0.712
	Twin	5 (25.0%)	3 (18.7%)
Full-term birth	Single	225 (99.1%)	175 (97.7%)	0.409
	Twin	2 (0.9%)	4 (2.3%)
Birth weight	Single birth (g)	3391.3 (517.0)	3442.4 (522.5)	0.311
	Twin (g)	2129.3 (528.6)	2409.3 (368.5)	0.159
Birth length	Single birth (cm)	50.4 (1.59)	50.4 (1.9)	0.921
	Twin (cm)	46.9 (3.50)	46.1 (4.3)	0.602