Table 2 Comparison of postpartum pelvic function and POP-Q indexes in the overall populations

Hiatus area (cm²)

1

22.04 ± 4.16

19.02 ± 3.76

< 0.001

< 0.001

3

19.16 ± 3.74

16.46 ± 3.33

< 0.001

6

16.74 ± 3.18

14.54 ± 3.21

< 0.001

12

14.35 ± 2.66

12.94 ± 3.37

< 0.001

Hiatus circumference (mm)

1

186.15 ± 21.23

173.71 ± 25.50

< 0.001

< 0.001

3

170.15 ± 19.51

156.08 ± 26.60

< 0.001

6

155.67 ± 33.78

145.43 ± 33.78

< 0.001

12

139.87 ± 18.39

130.53 ± 34.67

< 0.001

Hiatus left and right diameter (cm)

1

5.35 ± 0.81

5.13 ± 0.84

< 0.001

< 0.001

3

4.84 ± 0.74

4.61 ± 0.74

< 0.001

6

4.47 ± 0.65

4.25 ± 0.67

< 0.001

12

4.07 ± 0.54

3.89 ± 0.55

< 0.001

Hiatus front and rear diameter (cm)

1

6.43 ± 1.77

5.95 ± 0.69

< 0.001

< 0.001

3

5.73 ± 0.64

5.39 ± 0.64

< 0.001

6

5.30 ± 0.65

4.98 ± 0.67

< 0.001

12

4.80 ± 0.59

4.53 ± 0.59

< 0.001

Bladder neck (mm) (rest)

1

17.54 ± 6.95

19.18 ± 6.25

0.073

Ref.

3

16.78 ± 6.59

18.34 ± 6.60

0.081

6

16.87 ± 7.22

18.08 ± 7.40

0.043

12

17.11 ± 6.66

16.84 ± 7.03

< 0.001

Bladder neck (mm) (Fall’s)

1

-12.58 ± 11.60

-11.31 ± 9.11

0.129

Ref.

3

-5.61 ± 10.40

-3.41 ± 10.15

< 0.001

6

-0.40 ± 8.96

0.34 ± 7.89

< 0.001

12

2.28 ± 6.65

2.99 ± 5.98

< 0.001

POP-Q staging

(Phase 0/I)

1

48 (42.86)

92 (50.55)

0.002

0.012

3

73 (65.18)

144 (79.12)

< 0.001

6

101 (90.18)

173 (95.05)

< 0.001

12

107 (95.54)

181 (99.45)

< 0.001