Table 2.

Live birth, clinical pregnancy, and SAB rates: any compaction vs. no change vs. any expansion

	Any compactionb (n = 43)	No changec (n = 64)	Any expansiond (n = 152)	p valuef
LBR, n (%)	25/43 (58.1)	35/64 (54.7)	89/152 (56.6)	0.96
CPR, n (%)	27/43 (62.8)	46/64 (71.9)	103/152 (67.8)	0.61
SAB ratea, n (%)	1/27 (3.7)	8/46 (17.4)	9/101e (8.9)	0.13

LBR live birth rate, CPR clinical pregnancy rate, SAB spontaneous abortion

^aDenominator is number of clinical pregnancies in respective group

^bCycles with ≥ 5% decrease in endometrial thickness between the end of the estrogen phase and the day before embryo transfer

^cCycles with ≥ 5% increase in endometrial thickness between the end of the estrogen phase and the day before embryo transfer

^dCycles with < 5% change in endometrial thickness between the end of the estrogen phase and the day before embryo transfer

^eTwo clinical pregnancies in the “Any Expansion” group were electively terminated. These were not omitted from the denominator for calculation of the SAB rate in this group

^fChi-squared