Evidence map›Paper›PMID 32858358›Full record

ArticleSleep medicine2020

Associations of daily weather and ambient air pollution with objectively assessed sleep duration and fragmentation: a prospective cohort study.

Wenyuan Li, Suzanne M Bertisch, Elizabeth Mostofsky, Angeliki Vgontzas, Murray A Mittleman

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Sleep medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
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  4. Observational
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  12. Observational
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.

Wenyuan LiDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, USA; Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
Suzanne M BertischProgram in Sleep Medicine Epidemiology, Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
Elizabeth MostofskyDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, USA; Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
Angeliki VgontzasDepartment of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
Murray A MittlemanDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, USA; Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA. Electronic address: mmittlem@hsph.harvard.edu.
Beth Israel Deaconess Medical Center · USBrigham and Women's Hospital · US

Funding

The Harvard Clinical and Translational Science CenterUL1TR002541 · NCATS · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2018 to 2022
$93.0M
Short Sleep Duration and Sleep Disturbance as a Trigger of MigraineR21NS091627 · NINDS · BRIGHAM AND WOMEN'S HOSPITAL · PI BERTISCH, SUZANNE · 2015 to 2016
$498k
NCATS NIH HHS UL1 TR002541NINDS NIH HHS R21 NS091627
6 · The paper itself

Abstract

objectiveGiven the lack of studies examining the associations between daily weather and air pollution with nightly objective sleep over multiple weeks, we quantified these associations in a prospective cohort of healthy participants with episodic migraine.

methodsNinety-eight participants completed daily electronic diaries and wore an actigraph for an average of 45 ds, and a total 4406 nights of data were collected. Nightly sleep characteristics including duration, wake after sleep onset (WASO), and efficiency were assessed using wrist actigraphy. Daily weather parameters and air pollution levels were collected from local weather station and ground-level air quality monitors. We used linear fixed effects models adjusting for participant, day of the week, and day of the year (for weather analysis), and additionally adjusted for temperature and relative humidity (for air pollution analysis).

resultsThe participants were 35 ± 12 yrs old and 86 were women. A 10 °F higher daily average temperature was associated with 0.88 (95% CI: 0.06, 1.70) minutes longer WASO and 0.14% (95% CI: -0.01%, 0.30%) lower sleep efficiency on that night. A 14 parts per billion (ppb) (interquartile range) higher daily maximum eight-h ozone was associated with 7.51 (95% CI: 3.23, 11.79) minutes longer sleep duration on that night. Associations did not differ between cold (October-March) and warm (April-September) seasons.

conclusionsHigher daily ozone was associated with longer sleep duration and modest associations were observed between higher temperature and lower WASO and lower efficiency.

Indexed as

Air PollutionCohort StudiesFemaleHumansMaleProspective StudiesSleepWeatherActigraphyAir pollutionCohort studySleepWeather

Identifiers

PMID32858358
PMCPMC7669563
OpenAlexW3037691358

What OpenQuestion holds

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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.