. 2024 Mar 22;15:85. doi: 10.1186/s13244-024-01646-3

Table 2.

Parameters of NC and UI group during the late-proliferative and mid-secretory phase

Groups	Cases (n)	EMT (mm)	UA-PI	E-mean (kPa)	SWV-mean (m/s)	Days after ovulation (days)
NC
LPNC	52	10.37 ± 1.46	2.64 ± 0.52	14.40 ± 2.92	2.18 ± 0.24
MPNC	45	11.68 ± 1.27	2.35 ± 0.38	10.18 ± 3.29	1.79 ± 0.30	7.62 ± 0.81
UI
LPUI	59	9.35 ± 1.63	3.14 ± 0.63	25.57 ± 7.06	2.88 ± 0.41
MPUI	41	10.03 ± 1.35	2.90 ± 0.75	21.51 ± 7.63	2.61 ± 0.51	7.51 ± 0.64
p _{LPNC vs LPUI}		0.001^b	< 0.001^a	< 0.001^a	< 0.001^a
p _{MPNC vs MPUI}		< 0.001^b	< 0.001^a	< 0.001^a	< 0.001^a	0.601^a
p _{LPNC vs MPNC}		< 0.001^b	< 0.001^a	< 0.001^a	< 0.001^a
p _{LPUI vs MPUI}		0.786^b	0.531^a	0.845^a	0.753^a

NC Normal control, LPNC Late-proliferative phase of normal control, MPNC Mid-secretory phase of normal control, UI Unexplained infertility, LPUI Late-proliferative phase of unexplained infertility, MPUI Mid-secretory phase of unexplained infertility, EMT Endometrial thickness, UA-PI Uterine artery PI, E-mean Mean elasticity (or mean Young’s modulus), SWV-mean Mean shear wave velocities

^aMann-Whitney U test

^bStudent’s test

p < 0.05, indicating statistical significance