Meta-Analysis of Physical Interventions for Preventing Perineal Trauma

A 2026 Bayesian network meta-analysis by Linli Xu synthesizes results from 31 randomized controlled trials involving 10,745 participants across 15 countries. It compares the effectiveness of physical interventions like pelvic floor exercise, massage, and warm compresses for preventing perineal trauma during vaginal delivery.

Use Cases

• Rank intervention efficacy using SUCRA values for outcomes like overall laceration, episiotomy, and intact perineum.
• Compare relative risk (RR) estimates and credible intervals for specific interventions such as antenatal pelvic floor exercise versus warm compresses.
• Assess neonatal safety outcomes across all included physical interventions.
• Identify null-effect interventions, such as education-only approaches with RR near 1.03.

Strengths

• Analysis includes 31 randomized controlled trials with 10,745 total participants.
• Results are derived from a Bayesian network meta-analysis, providing comparative rankings (SUCRA) and credible intervals.

Limitations

• The dataset scope is limited to a single PDF file of 134.9 KB, containing only summary results, not raw trial data.
• Generalizability is constrained as the majority of participants were primiparous women in high-resource settings.
• Findings for severe perineal pain reduction are noted as exploratory due to sparse network structures.

Provenance

Source

Systematic review and meta-analysis published on figshare by author Linli Xu.

Collection Method

Data extracted from PubMed, Web of Science, Embase, and Cochrane CENTRAL; analyzed using Bayesian network meta-analysis in R Studio.

Time Range

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Freshness

Last updated in April 2026.

Geography

Studies from 15 countries, primarily high-resource settings.