Table IV.

Second- and third-trimester trajectories of uterine indices in the VIRTUAL Placenta subcohort for pregnancies after frozen-thawed ET (n = 32), fresh ET (n = 56), and after natural conception (n = 126).

		Model 1		Model 2
		Beta (95% CI)	P-value	Beta (95% CI)	P-value
UtA-PI	Frozen-thawed ET	−0.122 (−0.238, −0.029)	0.013	−0.158 (−0.268, −0.048)	0.005
	Fresh ET	Reference		Reference
	Frozen-thawed ET	−0.115 (−0.218, −0.012)	0.029	−0.104 (−0.211, 0.002)	0.055
	Fresh ET	0.019 (−0.063, 0.101)	0.647	0.048 (−0.042, 0.138)	0.291
	Natural conception	Reference		Reference
UtA-RI	Frozen-thawed ET	−0.043 (−0.078, −0.008)	0.018	−0.052 (−0.089, −0.015)	0.006
	Fresh ET	Reference		Reference
	Frozen-thawed ET	−0.033 (−0.066, −0.001)	0.043	−0.028 (−0.062, 0.005)	0.093
	Fresh ET	0.010 (−0.016, 0.035)	0.454	0.020 (−0.008, 0.048)	0.159
	Natural conception	Reference		Reference

Statistically significant values are in bold. Model 1: Adjusted for GA.

Model 2: Adjusted for GA, parity, periconceptional folic acid supplement use and smoking.