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Table 3 Risk factors identified by a univariate analysis and a multiple logistic regression analysis for delivery < 34 weeks§or < 37 weeksof gestation in patients who had undergone polypectomy

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

 

Odds ratio

crude (95% CI)

adjusted (95% CI)

(a) Delivery < 34 weeks§of gestation

Polyp width (≥ 12 mm)

4.0* (1.2–13.1)

11.8* (2.5–77.5)

Bleeding before PP

7.7* (1.6–37.3)

6.5* (1.2–55.7)

PP (at ≤10 weeks)

5.2** (1.3–20.3)

5.9** (1.2–45.0)

Decidual polyps

8.1** (1.00–65.9)

2.8 (0.37–58.1)

History of PTB

2.8 (0.69–11.6)

0.84 (0.11–5.3)

(b) Delivery < 37 weeksof gestation

Polyp width (≥ 12 mm)

6.5* (2.0–21.4)

6.5* (1.6–30.9)

Bleeding before PP

3.1** (1.00–9.80)

1.8 (0.51–7.1)

PP (at ≤10 weeks)

3.9** (1.2–12.3)

4.0** (1.1–17.6)

Decidual polyps

11.5* (1.4–92.7)

1.2 (0.28–5.3)

History of PTB

2.6 (0.69–9.78)

1.4 (0.24–7.2)

  1. §Delivery < 34 weeks: PTB < 34 weeks or miscarriage > 12 weeks, crude: The odds ratio calculated by a univariate analysis, adjusted: The odds ratio calculated by a multiple logistic regression analysis, CI: confidence interval, PP: polypectomy, PTB: preterm birth, *: p < 0.01, **: p < 0.05
  2. Delivery < 37 weeks: PTB < 37 weeks or miscarriage > 12 weeks, crude: The odds ratio calculated by a univariate analysis, adjusted: The odds ratio calculated by a multiple logistic regression analysis, CI: confidence interval, PP: polypectomy, PTB: preterm birth, *: p < 0.01, **: p < 0.05