Table 1 Baseline characteristics of patients included in this study

Age (y)

34.1 ± 4.613

33.2 ± 4.125

.174

BMI (kg/m²)

20.6 (19.1–23.0)

20.7 (19.2–22.1)

.896

Gravidity

1 (1–2)

2 (1–2)

.354

Parity

1 (1–2)

2 (1–2)

.122

Abortion

1 (0–2)

0 (0–1)

.322

Number of previous CS (%)

.068

 1

50 (52.1)

37 (38.9)

 ≥ 2

46 (47.9)

58 (61.1)

Symptoms before treatment (%)

 Prolonged menses

96(100)

95(100)

-

 Infertility

42(37.5)

28(26.3)

.093

 Niche-fluid by Ultrasound (%)

87(90.6)

83(87.4)

.472

Area of niche (mm²) (%)

.211

 Grade 1

36 (37.5)

26 (27.7)

.211

 Grade 2

17 (17.7)

25 (26.6)

 Grade 3

43 (44.8)

43 (45.7)

Uterine position (%)

.565

 Anteflexion

44 (45.8)

47 (50)

 Retroflexion

52 (54.2)

47 (50)

CD138 + /HPF ≥ 5 (%)

25/76(32.9)

15/57 (26.3)

.413

Surgical indicators

 Hospital stays (d)

2 (1–2)

3 (3–5)

< .001

 Operative time (min)

20 (15–30)

45 (30–65)

< .001

 Bleeding volume (mL)

5 (5–10)

30 (15–50)

< .001

 Fever (> 37.3 ℃)

0

23 (24.2)

< .001

 Perforation

0

0

Postoperative menstruation (%)

.341

 2 points

49 (48.6)

33 (38.1)

 1 point

22 (26.2)

42 (41.9)

 0 point

23 (25.2)

19 (20.0)

Disappearance of niche-fluid (%)

61 (70.1)

50 (60.2)

.176