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Table 2 Comparison of clinical features between delivery at < 34 weeks or miscarriage > 12 weeks and delivery at ≥34 weeks of gestation

From: Risk factors for spontaneous miscarriage above 12 weeks or premature delivery in patients undergoing cervical polypectomy during pregnancy

   

(N = 73)

Clinical feature

Delivery at

<  34 weeks or miscarriage > 12 weeks

Delivery at

≥ 34 weeks

p-value

(N = 16)

(N = 57)

Age

32.6 ± 4.9

34.1 ± 3.7

0.283

Nulliparity (%)

50.0

49.1

0.950

Smoking (%)

6.2

1.7

0.503

Previous second trimester loss (%)

37.5

14.0

0.094

History of full-term delivery (%)

33.3

56.4

0.302

Other maternal diseases (%)

12.5

28.0

0.201

Uterine anomalies (%)

18.7

5.2

0.215

Use of vaginal progesterone (%)

0

0

N/A

Infertility treatment (%)

6.2

17.5

0.264

History of PTB (at < 34 weeks) (%)

25.0

10.5

0.137

Bleeding before polypectomy (%)

87.5*

47.4

0.004

Nugent score (points)

0 (0–8)

0 (0–5)

0.640

GA at polypectomy (weeks)

9* (5–13)

11 (5–29)

< 0.001

Polypectomy by twisting (%)

68.7

87.7

0.070

Polyp Width (mm)

12.8 ± 7.7*

7.4 ± 4.4

0.012

Decidual polyps (%)

93.7*

64.9

0.024

Leukocytes in polyps (/HPF)

311 ± 147

286 ± 198

0.683

h-CAM ≥ stage 2 (%)

61.5*

20.0

0.010

Funisitis (%)

38.5

24.0

0.351

  1. Data indicate the mean ± standard deviation or median (range), PTB preterm birth, GA gestational age, HPF high power field, h-CAM histological chorioamnionitis, N/A not available, *: p < 0.05.