Evidence map›Paper›PMID 41495723›Full record

ArticleBMC public health2026

Outdoor night light exposure and sleep structure, a panel study using consumer-grade wearables.

Huining Yang, Jiajun Liu, Yunzhe Chen, Mintao Su, Sarawut Thepanondh, Peining Zhou, Kunyao Yu, Jing Ma, Zhenyu Zhang

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Article
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

9 authors.

Huining Yang *Department of Disease Prevention and Control, Third Medical Center, General Hospital of the People's Liberation Army, Beijing, China.
Jiajun Liu *Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China.
Yunzhe Chen *Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China.
Mintao SuFuzhou Center for Disease Control and Prevention, Fujian, China.
Sarawut ThepanondhDepartment of Sanitary Engineering, Faculty of Public Health, Mahidol University, Bangkok, Thailand.
Peining ZhouDepartment of Respiratory and Critical Care Medicine, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China.
Kunyao YuDepartment of Respiratory and Critical Care Medicine, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China.
Jing MaDepartment of Respiratory and Critical Care Medicine, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China. majjmail@163.com.
Zhenyu ZhangDepartment of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China. zzy@pku.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundArtificial light at night (ALAN) poses a growing public health concern due to its potential to disrupt circadian rhythms and affect sleep quality. This study examines the association between outdoor nighttime light (NTL) exposure and sleep duration using objective wearable-device data from a Chinese panel.

methodsSleep metrics were collected from 4,690 participants (2017-2019) via Zepp Health smart bracelets. Outdoor NTL exposure was obtained from NASA's Black Marble product and categorized into tertiles. Mixed-effects regression models were employed to analyze the associations between NTL exposure and objectively measured sleep parameters, adjusting for demographic, behavioral, and environmental covariates.

resultsThe results suggest that NTL exposure (one standard deviation of 5.20 W·cm

conclusionThis study suggests that moderate NTL levels are associated with slightly longer light sleep durations, whereas higher NTL levels may negatively impact deep sleep. The findings stress the need for urban lighting guidelines that balance safety with sleep health, minimizing negative effects on circadian rhythms. This research also contributes to future studies on personalized light exposure, considering indoor factors and individual sleep behaviors.

Indexed as

LightLightingSleepWearable Electronic DevicesAdultAgedChinaCircadian RhythmFemaleHumansMaleMiddle AgedYoung AdultNighttime lightOutdoor lightSleep durationSleep qualityWearable device

Identifiers

PMID41495723
PMCPMC12870223

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.