Combined analysis of endometrial thickness and pattern in predicting outcome of in vitro fertilization and embryo transfer: a retrospective cohort study

Table 4 Clinical outcome according to thickness grouping and combined grouping of thickness and pattern

Thickness grouping	CPR	Miscarriage rate	CPR by pattern A^a	CPR by pattern B^a	P ^b
Group1(n = 52)	23.1%	8.3%	11/45(24.4%)	1/7(14.3%)	NS
Group2(n = 2349)	47.6%	8.9%	1047/2183(48%)	71/166(42.8%)	NS
Group3(n = 495)	55.2%	6.6%	236/432(54.6%)	37/63(58.7%)	NS
P ^b	< 0.01	NS	< 0.01	< 0.05	-

Endometrial thickness: Group 1: ≤ 7 mm; Group 2: >7 to 14 mm; Group 3: >14 mm
Pattern A = triple-line pattern, hypoechoic endometrium with well-defined hyperechoic outer walls and central echogenic line
Pattern B = no-triple line pattern, isoechogenic or homogeneous hyperechoic endometrium with a poorly defined or absent central echogenic line
CPR = clinical pregnancy rate
^aPregnant cycles/total cycles and percentage of clinical pregnancies
^bP-values by chi-square text
NS = not significant

ISSN: 1477-7827