Table 4 Comparison the general conditions in pregnant patients and non-pregnant patients

Adhesion degree before surgery

 Mild

17

4

80.95

0.6867^a

 Moderate

82

12

87.23

Menstrual blood volume before surgery

 Hypomenorrhea

70

9

88.61

0.2473^a

 Normal

29

7

80.56

Adhesion recurrence at the second-look hysteroscopy

 No

90

10

90.00

0.0063^a

 Yes

9

6

60.00

 Age

31.00(28.00,34.00)

30.50(28.50,34.00)

0.6153^b

 Gravidity

3.00(2.00,4.00)

2.00(1.50,3.00)

0.2239^b

 Parity

0(0,1.00)

0(0,0.50)

0.2692^b

 Endometrial thickness before surgery (mm)

6.00(5.00,7.50)

6.50(5.00,8.50)

0.4776^b

 Endometrial volume before surgery (cm³)

1.89(1.23,2.34)

1.93(1.17,3.34)

0.8178^b

 Endometrial thickness after 3-months surgery (mm)

8.00(7.00,9.00)

8.00(5.50,9.00)

0.5352^b

 Endometrial volume after 3-months surgery (cm³)

2.54(2.21,3.25)

2.57(1.333.83)

0.8620^b