Table 3 Predictive scoring model for deliveries before labor during vaginal birth after cesarean

Maternal age at delivery (years)

<35

≥ 35

2

0

IT diameter (cm)

> 9.0

8.0–9.0

7.5

7.0

< 7.0

3

2

1

0

-1

Previous vaginal delivery

yes

no

4

0

Maternal pre-delivery BMI (Kg/m²)

< 30

≥ 30 and <50

≥ 50

2

1

0

Interdelivery interval (years)

2–4

<2 or >4

2

0

Gestational age at delivery (weeks)

<34

≥ 34 and <37

37–40

≥ 41

3

2

1

0

TOL during prior CD

yes

no

1

0

Estimated fetal weight (g)

<1750

2000 ± 250

2500 ± 250

3000 ± 250

3500 ± 250

4000 ± 250

>4250

5

4

3

2

1

0

-1

Dystocia as prior CD indication

no

yes

1

-1

Hypertensive disorders

no

GH or CH

Preeclampsia

Severe Preeclampsia

Eclampsia

3

2

1

0

-3