Evidence map›Paper›PMID 37741702›Full record

ArticleSleep health2024

Later circadian timing and increased sleep timing variability are associated with attenuations in overnight blood pressure dipping among chronic nightshift workers.

Brooke M Shafer, Desirae Christopher, Steven A Shea, Ryan Olson, Andrew W McHill

Open access · greenAbstract read
In one paragraph

Article in Sleep health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.5field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 6 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Brooke M ShaferSleep, Chronobiology, and Health Laboratory, School of Nursing, Oregon Health & Science University, Portland, Oregon, USA.
Desirae ChristopherSleep, Chronobiology, and Health Laboratory, School of Nursing, Oregon Health & Science University, Portland, Oregon, USA.
Steven A SheaSleep, Chronobiology, and Health Laboratory, School of Nursing, Oregon Health & Science University, Portland, Oregon, USA; Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, Oregon, USA.
Ryan OlsonOregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, Oregon, USA; School of Public Health, OHSU-Portland State University, Portland, Oregon, USA; Department of Psychology, Portland State University, Portland, Oregon, USA.
Andrew W McHillSleep, Chronobiology, and Health Laboratory, School of Nursing, Oregon Health & Science University, Portland, Oregon, USA; Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, Oregon, USA. Electronic address: mchill@ohsu.edu.
Oregon Health & Science University · USPortland State University · US

Funding

Oregon Clinical and Translational Research Institute - The National COVID Cohort Collaborative (N3C)UL1TR002369 · NCATS · OREGON HEALTH & SCIENCE UNIVERSITY · PI Cynthia D Morris, Christopher G. Slatore · 2017 to 2026
$78.4M
Oregon Clinical and Translational Research InstituteUL1TR000128 · NCATS · OREGON HEALTH & SCIENCE UNIVERSITY · PI ELLISON, DAVID H · 2012 to 2015
$28.7M
Social support during a randomized trial of a trucker weight loss interventionR01HL105495 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI OLSON, RYAN · 2011 to 2022
$6.2M
Endogenous circadian mechanisms underlying cardiovascular riskR35HL155681 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI STEVEN A SHEA · 2021 to 2026
$5.5M
Uncovering the Impact of Diet on the Human Circadian Timing SystemR01HL156948 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI MCHILL, ANDREW WILLIAM · 2022 to 2025
$2.5M
Uncovering Circadian Mechanisms of Poor Cardiometabolic HealthK01HL146992 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI MCHILL, ANDREW WILLIAM · 2019 to 2022
$669k
NCATS NIH HHS UL1 TR000128NCATS NIH HHS UL1 TR002369NHLBI NIH HHS K01 HL146992NHLBI NIH HHS R01 HL105495NHLBI NIH HHS R01 HL156948NHLBI NIH HHS R35 HL155681
6 · The paper itself

Abstract

objectiveDetermine relationships between overnight blood pressure, circadian phase, and sleep variability among dayshift and chronic nightshift nurses.

methodsTwenty participants working dayshift (n = 10) or nightshift (n = 10) schedules participated in a 7-day cross-sectional study. Participants underwent an evening in-laboratory melatonin assessment and wore ambulatory blood pressure devices to assess 24-hour blood pressure patterns. Overnight blood pressure dipping was calculated from sleeping/waking systolic blood pressure ratio and salivary dim-light melatonin onset determined circadian phase. Sleep variability was assessed using the standard deviation of 7-day sleep onset.

resultsNightshift workers had later circadian phase, greater sleep onset variability, and an attenuated overnight blood pressure dipping pattern. Later circadian phase was associated with attenuated dipping patterns and sleep onset variability was negatively correlated with blood pressure dipping magnitude in nightshift, but not dayshift workers.

conclusionsChronic circadian disruption via higher sleep onset variability among nightshift workers may contribute to attenuated blood pressure dipping and cardiovascular risk in this population.

Indexed as

Circadian RhythmMelatoninBlood PressureBlood Pressure Monitoring, AmbulatoryCross-Sectional StudiesHumansSleepMelatoninCardiovascular healthCircadian disruptionCircadian misalignmentSleep regularity

Identifiers

PMID37741702
PMCPMC10954583
OpenAlexW4386965115

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.