Table 2 Significant variables included in the three simple models.

From: Probability of severe postpartum hemorrhage in repeat cesarean deliveries: a multicenter retrospective study in China

Variables

Pre-operative simple model

Operative simple model

Simple model

OR (95%CI)

P

OR (95%CI)

P

OR (95%CI)

P

PP

10.427(6.892–15.777)

***

6.370(4.270–9.503)

***

6.6114(4.427–9.880)

***

Placenta accreta

6.407(4.416–9.295)

***

5.580(3.904–7.975)

***

6.337(4.435–9.055)

***

Gestational weeks

0.864(0.810–0.921)

***

0.863(0.815–0.915)

***

0.844(0.798–0.892)

***

Source

0.476(0.348–0.650)

***

    

Oligohydramnios

0.203(0.118–0.349)

***

    

Endometrial injury

2.417(1.370–4.267)

**

2.562(1.481–4.430)

**

2.460(1.420–4.262)

**

Numbers of CD

1.565(1.134–2.159)

**

    

Interval months

1.005(1.001–1.008)

**

    

Time of RCD

0.680(0.487–0.949)

*

    

Pelvic adhesion during RCD

  

1.980(1.513–2.592)

***

  

Uterine incision during RCD

  

1.631(1.281–2.077)

***

  
  1. PP placenta previa, CD cesarean delivery, RCD repeated cesarean delivery, OR odds ratio, CI confidence interval. ***0.001 **0.01 *0.05.
  2. Endometrial injury other than history of prior cesarean delivery includes uterine curettage, hysteromyomectomy, hysteroscopic surgery and other reason that damaged the endometrium; Source includes patients in hospital and referral; Time of RCD includes elective and emergency CD; Uterine incision status during RCD includes normal, thin incision, incomplete and complete rupture.