Table 4 Multivariate analysis on predictors of dil_cm ≥ 4 (n = 216 observations)

Uterine Activity model

Frequency (> 2)

2.12

(0.85;5.26)

0.104

Rhythm (regular)

5.09

(2.15;12.06)

< 0.0001

Duration (>50″)

9.40

(4.20;21.04)

< 0.0001

Maternal signs model

Vaginal Loss

1.84

(0.86;3.96)

0.118

Show

3.29

(1.38;7.82)

0.007

Pain

1.56

(0.74;3.28)

0.239

Breathing

1.95

(0.81;4.71)

0.137

Sweating and/or Blush

0.86

(0.41;1.78)

0.681

Posture

1.87

(0.79;4.41)

0.153

Conversation

5.79

(1.46;22.93)

0.012

Mood

1.56

(0.66;3.67)

0.310

Final model

Frequency (> 2)

1.33

(0.46;3.81)

0.599

Rhythm (regular)

6.26

(2.28;17.13)

< 0.0001

Duration (>50″)

8.15

(3.15;21.11)

< 0.0001

Vaginal Loss

1.60

(0.65;3.94)

0.305

Show

4.29

(1.47;12.50)

0.008

Pain

1.89

(0.77;4.64)

0.163

Breathing

1.50

(0.49;4.62)

0.476

Sweating

0.44

(0.17;1.16)

0.098

Posture

1.09

(0.36;3.31)

0.877

Conversation

2.86

(0.60;13.58)

0.187

Mood

1.23

(0.41;3.71)

0.711