Results
The calculated distance distribution of the whole cohort ranged from 1.410 to 3.962 cm. The average distance ranges of the four groups were as follows: Group 1, ≤ 1.98 cm; Group 2, 1.99-2.19 cm; Group 3, 2.20-2.50 cm; Group 4, ≥ 2.51 cm, which represented different inclination degrees of uterine corpus. The description of pregnancy outcomes of the entire cohort, cleavage-stage ET cohort, and blastocyst transfer cohort in the different inclination groups are detailed in Figure S2.