Observational data on cohabitation history among US women aged 22-44 years

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CDC MMWR Published April 6, 2026 Medically reviewed April 19, 2026 By Dr. Amelia Tan, PhD · Internal Medicine & Chronic Disease

Key Takeaway

Note: Observational cohabitation data lacks reported prevalence and clinical outcomes.

This observational study described the percentage of women aged 22-44 years in the United States who have ever cohabited with an opposite-sex partner. The study did not report an intervention, exposure, or comparator. It focused solely on this demographic measure.

The main result for the percentage of women in this age group with a history of cohabitation was not reported in the provided data. No secondary outcomes, effect sizes, absolute numbers, or statistical measures like p-values or confidence intervals were available. The direction of any trend or comparison was also not reported.

No safety or tolerability data were reported, as the study was descriptive rather than interventional. Key limitations include the lack of reported results, sample size, follow-up duration, and any causal or clinical outcomes. The practice relevance for healthcare providers is minimal, as this demographic observation does not directly inform clinical decision-making without linkage to health outcomes.