Table 1 Basic and clinical characteristics before and after HBOT

Total Cycles, n

76

58

-

Cycle Cancellation Rate, n (%)

47(61.8)

11(19.0)

0.001

Endometrial Preparation Method, n (%)

0.042

NC-FET

23 (30.3)

12 (20.7)

HRT-FET

33 (43.4)

38 (65.5)

GnRH-a FET

16 (21.1)

8 (13.8)

IVF-ET

4 (5.3)

0

Initial ET, mm

4.46 ± 1.21

4.14 ± 1.17

0.174

ET on Endometrial Transformation Day, mm

5.76 ± 1.66

6.57 ± 1.23

0.002

Duration of Estrogen Administration, d

15.00 [13.00, 15.00]

13.00 [12.00, 15.00]

0.057

Endometrial Pattern on Endometrial Transformation Day^a, n (%)

0.710

A

3 (3.9)

1 (1.7)

B

47 (61.8)

35 (60.3)

C

26 (34.2)

22 (37.9)

P levels on Endometrial Transformation Day, ng/ml

0.21 ± 0.17

0.28 ± 0.36

0.426

ET on Embryo Transfer Day, mm

7.06 ± 1.99

6.61 ± 1.32

0.429

Change of ET from Endometrium Transformation Day to Embryo Transfer Day, mm

− 0.20 ± 1.62

-0.16 ± 0.96

0.922