Table 5 Factors associated with episiotomy for multipara and non-operative vaginal deliveries according to maternal age (hierarchical regression adjusted on the year of delivery, hospital status, hypertensive disorders and gestational diabetes).

All deliveries

Prematurity

0.54

0.36

0.80

0.52

0.49

0.56

0.54

0.51

0.56

0.41

0.34

0.49

Epidural analgesia

1.77

1.41

2.22

1.58

1.54

1.63

1.60

1.57

1.64

1.73

1.60

1.87

Non-reassuring fetal heart

1.86

1.36

2.53

1.60

1.54

1.67

1.57

1.53

1.62

1.57

1.43

1.73

Meconium in amniotic fluid

1.64

1.19

2.27

1.25

1.21

1.30

1.19

1.15

1.23

1.21

1.10

1.33

Shoulder dystocia

1.95

1.06

3.60

1.55

1.43

1.68

1.48

1.39

1.57

1.75

1.44

2.14

Scarred uterus

4.13

3.08

5.56

3.33

3.22

3.45

2.60

2.53

2.67

1.97

1.79

2.16

Multiple pregnancy

–

–

–

1.98

1.53

2.56

1.71

1.45

2.03

4.05

2.44

6.70

Breech presentation

–

–

–

–

–

–

–

–

–

–

–

–

Singleton deliveries

Prematurity

0.48

0.30

0.77

0.54

0.50

0.58

0.56

0.52

0.59

0.42

0.34

0.52

Epidural analgesia

1.68

1.32

2.15

1.57

1.52

1.62

1.58

1.55

1.62

1.73

1.60

1.87

Non-reassuring fetal heart

1.53

1.06

2.20

1.60

1.53

1.66

1.60

1.55

1.64

1.59

1.44

1.76

Meconium in amniotic fluid

1.50

1.04

2.15

1.24

1.19

1.29

1.17

1.14

1.21

1.18

1.07

1.31

Shoulder dystocia

–

–

–

1.26

1.16

1.38

1.27

1.19

1.36

1.54

1.24

1.92

Scarred uterus

4.81

3.47

6.62

3.40

3.28

3.52

2.64

2.57

2.71

2.02

1.83

2.23

Newborn weight (ref < 4,000 g)

1.63

1.08

2.46

1.63

1.57

1.69

1.49

1.45

1.53

1.27

1.14

1.40

Breech presentation

–

–

–

–

–

–

–

–

–

–

–

–