Table 4 Univariate and multivariate logistic regression analyses of individual parameters related to cervical insufficiency

Age

1.04

0.94–1.16

0.436

BMI

1.14

1.03–1.25

0.008*

1.14

0.99–1.31

0.077

Gravida

2.27

1.61–3.21

< 0.001*

2.62

1.57–4.39

< 0.001*

Para

2.22

1.40–3.51

0.001*

1.30

0.62–2.72

0.491

BPD

1.35

0.20–9.27

0.758

AC

0.90

0.51–1.60

0.727

FL

0.15

0.01–2.16

0.162

 s-trimester strain rate

Anterior cervical lip

≥ 0.14%

8.66

2.51–29.87

0.001*

7.32

1.70–31.41

0.007*

< 0.14%

1

1

Posterior cervical lip

≥ 0.09%

5.15

1.86–14.27

0.002*

5.22

1.42–19.18

0.013*

< 0.09%

1

1

 s-trimester cervical length

≤ 37.4 mm

4.79

1.91–12.06

0.001*

3.17

1.08–9.29

0.035*

> 37.4 mm

1

1

Second-trimester endocervical canal width

0.01

0.00–6.20

0.157