Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,535 questions · 3,601 findings · 252 reviews · Pregnancy and Childbirth

No studies found 726 · 20.2%GRADE not reported 421 · 11.7%Very low 828 · 23%Low 993 · 27.6%Moderate 486 · 13.5%High 147 · 4.1%

TENS vs no TENS

Relief of pain · women who have given birth vaginally, requiring analgesia for after‐birth pains.

It is very uncertain whether TENS changes adequate pain relief as reported by the woman (during next breast… compared with no TENS (very low certainty).

1 finding from 1 review

TENS vs no TENS

Additional analgesia required (escape analgesia) · women who have given birth vaginally, requiring analgesia for after‐birth pains.

The review found no eligible studies for this question.

1 finding from 1 review

NSAIDs vs opioid

Relief of pain · women who have given birth vaginally, requiring analgesia for after‐birth pains.

NSAID probably leads to higher adequate pain relief as reported by the woman (5 to 8 hours) compared with opioid (moderate certainty).

1 finding from 1 review

NSAIDs vs opioid

Need for additional pain relief (6 to 8 hours) · women who have given birth vaginally, requiring analgesia for after‐birth pains.

NSAID showed no clear difference in need for additional pain relief (6 to 8 hours) compared with opioid (low certainty).

1 finding from 1 review

Labour induction vs expectant management

Severe perineal tears (3rd degree or higher, as defined by trialists) · pregnant women at or beyond 37 weeks gestation

Labour induction showed no clear difference in perineal trauma (severe perineal tear) compared with expectant management (maternal outcomes) (low certainty).

1 finding from 1 review