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Table 2 Non-episiotomy versus selective episiotomy: primary maternal outcomes

From: Selective episiotomy vs. implementation of a non-episiotomy protocol: a randomized clinical trial

Variable

Non-Episiotomy

Selective Episiotomy

RR

95%CI

p-value

N

%

N

%

   

Duration of 2nd stage

 Mean ± SD (min)

27.2 ± 32.2

23.5 ± 21.7

 

0.8*

  >1 h

09

7.8

06

4.9

1.59

0.58 to 4.33

0.36

  ≤ 1 h

106

92.2

116

97.5

   

Episiotomy

 Yes

02

1.7

02

1.6

1.03

0.38 to 2.76

0.999*

 No

113

98.3

120

98.4

   

Spontaneous laceration

 Yes

95

82.6

102

83.6

0.96

0.68 to 1.35

0.86*

 No

20

17.4

20

16.4

   

Instrumental delivery

 Yes

01

0.8

0

-

NC

-

0.97*

 No

114

99.2

122

100.0

   

Severe perineal trauma

 Yes

02

1.8

03

2.5

0.85

0.41 to 1.76

0.999*

 No

113

98.2

119

97.5

   

Postpartum blood loss

 Mean ± SD

257.4 ± 200.4

244.5 ± 314.8

  

0.41

  >500 ml

16

13.9

09

7.4

1.89

0.87 to 5.0

0.10

  ≤ 500 ml

99

86.1

113

92.6

   

Need for perineal suturing

 Yes

89

77.4

94

77.1

1.00

0.75 to 1.35

0.999*

 No

26

22.6

28

22.9

   

Number of suture threads

 Median (IQR)

1.65 (1.0 to 2.0)

1.76 (1.0 to 2.0)

  

0.54**

  ≥ 2 threads

51

52.1

57

55.8

0.93

0.70 to 1.22

0.67*

 1 thread

47

47.9

45

44.2

   
  1. RR relative risk, CI confidence interval, IQR Interquartile range, NC Not calculated
  2. *Fisher two-tailed test; **Mann–Whitney test due to different variants or discrete variables