By Birth & Baby University · Last updated: October 2026 · 3 min read
A research statistic needs a source, a comparison and an explanation of its limits. This article uses one review to show how to check those details before sharing a claim with a client or colleague.
Key takeaways
Quick answer: check the original paper, distinguish its findings from your own practice claims, and keep uncertainty visible when speaking with families.
- Record the paper’s date and the question it addresses.
- Check what the comparison actually measures.
- Prepare questions for the clinical care team rather than making an individual prediction.
- Keep the citation with any statistic you choose to share.
What the review looked at
This article examines a 2017 review rather than claiming to summarize every study available today. Bohren and colleagues analyzed usable data from 26 trials involving 15,858 women. Several outcomes favored continuous support, but important findings had low evidence certainty. For cesarean birth, the pooled relative risk was 0.75 (95% CI 0.64–0.88). That is a group comparison, not an individual prediction. The review included different support providers; its pooled estimate is not a doula-only effect. Subgroup findings were exploratory. Failure to detect harm does not prove universal safety. Consult the review for other outcomes and their uncertainty.
How professional bodies have used the research
ACOG’s 2019 opinion describes doula support as an addition to nursing care.
How to talk about it with clients and colleagues
These are practice suggestions rather than findings from the research:
- Use the review’s own verbs. "May improve," "is associated with" and "was less likely" are accurate. "Will reduce" and "prevents" are not.
- Say what continuous support means. In the review it is one-to-one support that is continuous through labor. Clients sometimes hear it as a promise of constant physical presence from the moment they call.
- Name the limits. One sentence is enough: "The studies suggest this kind of support helps on average, though the evidence quality is rated low and no study can promise your outcome."
- Keep claims about your own clients out of it. The research does not tell you how your practice compares, and a small client list cannot either.
- Cite the review, not the summary of the summary. If a number on your website or in a handout came from a blog post, trace it to the review itself and check the year, the outcome and the confidence interval.
The bottom line
Use this paper as a starting point for careful conversations. Keep any evidence summary tied to its citation, and be clear about what you can offer as a doula. A research finding should not become a promise about a particular family’s birth.
This article is for professional education. It is not medical, legal or tax advice. Check the standards of your certifying organization and the rules where you work.
Sources and further reading
- Bohren MA, Hofmeyr GJ, Sakala C, Fukuzawa RK, Cuthbert A. Continuous support for women during childbirth. Cochrane Database of Systematic Reviews 2017, issue 7, CD003766. Read the source
- American College of Obstetricians and Gynecologists. Committee Opinion No. 766: Approaches to Limit Intervention During Labor and Birth. Obstetrics & Gynecology 2019;133:e164 to e173. Read the source
More for professionals: the Professionals Blog.
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