A Systematic Review and Meta-Analysis of Within-Person Changes in Cardiac Vagal Activity across the Menstrual Cycle: Implications for Female Health and Future Studies.

J Clin Med · 2019 · PMC6912442 · PMID 31726666

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did not reach statistical significanceno p-value reported

All but two cycle phase comparisons did not reach statistical significance (i.e., their 95% confidence interval intersected 0).

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