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'Risk of bias' graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
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Figure 1

'Risk of bias' graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.
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Figure 2

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.

Comparison 1 Tocolysis versus placebo, Outcome 1 Maternal side‐effects (not prespecified).
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Analysis 1.1

Comparison 1 Tocolysis versus placebo, Outcome 1 Maternal side‐effects (not prespecified).

Comparison 2 Reverse breech versus head push, Outcome 1 Infant birth trauma.
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Analysis 2.1

Comparison 2 Reverse breech versus head push, Outcome 1 Infant birth trauma.

Comparison 2 Reverse breech versus head push, Outcome 2 Extension of uterine incision.
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Analysis 2.2

Comparison 2 Reverse breech versus head push, Outcome 2 Extension of uterine incision.

Comparison 2 Reverse breech versus head push, Outcome 3 Blood loss > 500 mL.
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Analysis 2.3

Comparison 2 Reverse breech versus head push, Outcome 3 Blood loss > 500 mL.

Comparison 2 Reverse breech versus head push, Outcome 4 Mean blood loss.
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Analysis 2.4

Comparison 2 Reverse breech versus head push, Outcome 4 Mean blood loss.

Comparison 2 Reverse breech versus head push, Outcome 5 Blood transfusion.
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Analysis 2.5

Comparison 2 Reverse breech versus head push, Outcome 5 Blood transfusion.

Comparison 2 Reverse breech versus head push, Outcome 6 Endometritis.
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Analysis 2.6

Comparison 2 Reverse breech versus head push, Outcome 6 Endometritis.

Comparison 2 Reverse breech versus head push, Outcome 7 Wound infection.
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Analysis 2.7

Comparison 2 Reverse breech versus head push, Outcome 7 Wound infection.

Comparison 2 Reverse breech versus head push, Outcome 8 Admission to neonatal special care or intensive care unit.
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Analysis 2.8

Comparison 2 Reverse breech versus head push, Outcome 8 Admission to neonatal special care or intensive care unit.

Comparison 2 Reverse breech versus head push, Outcome 9 Early neonatal death rate.
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Analysis 2.9

Comparison 2 Reverse breech versus head push, Outcome 9 Early neonatal death rate.

Comparison 2 Reverse breech versus head push, Outcome 10 Mean fall in Hb (not prespecified).
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Analysis 2.10

Comparison 2 Reverse breech versus head push, Outcome 10 Mean fall in Hb (not prespecified).

Comparison 2 Reverse breech versus head push, Outcome 11 Operative time (min).
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Analysis 2.11

Comparison 2 Reverse breech versus head push, Outcome 11 Operative time (min).

Comparison 2 Reverse breech versus head push, Outcome 12 Mean hospital stay (not prespecified).
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Analysis 2.12

Comparison 2 Reverse breech versus head push, Outcome 12 Mean hospital stay (not prespecified).

Comparison 2 Reverse breech versus head push, Outcome 13 Average Apgar at 5 minutes (not prespecified).
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Analysis 2.13

Comparison 2 Reverse breech versus head push, Outcome 13 Average Apgar at 5 minutes (not prespecified).

Comparison 3 Elective instrument versus fundal pressure, Outcome 1 Infant birth trauma.
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Analysis 3.1

Comparison 3 Elective instrument versus fundal pressure, Outcome 1 Infant birth trauma.

Comparison 3 Elective instrument versus fundal pressure, Outcome 2 Extension of uterine incision.
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Analysis 3.2

Comparison 3 Elective instrument versus fundal pressure, Outcome 2 Extension of uterine incision.

Comparison 3 Elective instrument versus fundal pressure, Outcome 3 Mean fall in Hb.
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Analysis 3.3

Comparison 3 Elective instrument versus fundal pressure, Outcome 3 Mean fall in Hb.

Comparison 1. Tocolysis versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Maternal side‐effects (not prespecified) Show forest plot

1

97

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

Figuras y tablas -
Comparison 1. Tocolysis versus placebo
Comparison 2. Reverse breech versus head push

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Infant birth trauma Show forest plot

3

239

Risk Ratio (M‐H, Fixed, 95% CI)

1.55 [0.42, 5.73]

2 Extension of uterine incision Show forest plot

4

357

Risk Ratio (M‐H, Random, 95% CI)

0.23 [0.13, 0.40]

3 Blood loss > 500 mL Show forest plot

1

118

Risk Ratio (M‐H, Random, 95% CI)

0.5 [0.18, 1.37]

4 Mean blood loss Show forest plot

3

298

Mean Difference (IV, Random, 95% CI)

‐294.92 [‐493.25, ‐96.59]

5 Blood transfusion Show forest plot

2

177

Risk Ratio (M‐H, Random, 95% CI)

0.57 [0.20, 1.66]

6 Endometritis Show forest plot

3

285

Risk Ratio (M‐H, Random, 95% CI)

0.52 [0.26, 1.05]

7 Wound infection Show forest plot

4

357

Risk Ratio (M‐H, Fixed, 95% CI)

0.96 [0.58, 1.59]

8 Admission to neonatal special care or intensive care unit Show forest plot

2

226

Risk Ratio (M‐H, Random, 95% CI)

0.53 [0.23, 1.22]

9 Early neonatal death rate Show forest plot

1

108

Risk Ratio (M‐H, Random, 95% CI)

0.54 [0.23, 1.24]

10 Mean fall in Hb (not prespecified) Show forest plot

1

118

Mean Difference (IV, Random, 95% CI)

‐0.44 [‐0.72, ‐0.16]

11 Operative time (min) Show forest plot

4

357

Mean Difference (IV, Random, 95% CI)

‐14.99 [‐27.67, ‐2.30]

12 Mean hospital stay (not prespecified) Show forest plot

3

285

Mean Difference (IV, Random, 95% CI)

‐1.13 [‐2.75, 0.48]

13 Average Apgar at 5 minutes (not prespecified) Show forest plot

3

239

Mean Difference (IV, Random, 95% CI)

0.36 [‐0.64, 1.36]

Figuras y tablas -
Comparison 2. Reverse breech versus head push
Comparison 3. Elective instrument versus fundal pressure

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Infant birth trauma Show forest plot

1

44

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

2 Extension of uterine incision Show forest plot

1

44

Risk Ratio (M‐H, Fixed, 95% CI)

0.7 [0.13, 3.73]

3 Mean fall in Hb Show forest plot

1

44

Mean Difference (IV, Fixed, 95% CI)

0.03 [‐0.53, 0.59]

Figuras y tablas -
Comparison 3. Elective instrument versus fundal pressure