Sixteen US cohorts on preterm birth

What the study says

Plain-English summary

Pooling harmonized data from 16 cohorts gave the analysis more power and diversity than a single-site study.

The authors also modeled hypothetical exposure reductions and estimated fewer preterm births under lower population exposure.

The results broadly reinforced a smaller 2014 case-control study preserved in the original Be Gone Goods research archive.

Why it matters

Context

This is one of the strongest human observational datasets in the archive because it combines prospective biomonitoring across many cohorts.

What it cannot prove

Limitations

It remains observational. Urinary biomarkers are short-lived, methods varied by cohort, and modeled benefits are not trial results.

Proportionate next steps

Practical actions

• Focus on repeated, high-frequency exposure sources.
• Use pregnancy as a reason for proportionate precaution, not fear.
• Discuss personal medical risk with a qualified clinician.

Read it yourself

Original source

Associations between prenatal urinary biomarkers of phthalate exposure and preterm birth: a pooled study of 16 US cohorts

DOI: 10.1001/jamapediatrics.2022.2252