Association between exposure to particulate matter and heart rate variability in vulnerable and susceptible individuals.

NPJ Digit Med · 2025 · PMC11760931 · PMID 39856241

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a negative trendno p-value reported

On both the high and low cumulative concentration days, each daily average PM substance showed a negative trend with 24-h HRV.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.