Evidence map›Paper›PMID 33914140›Full record

ArticleJournal of neurology2021

Daytime sleepiness might increase the risk of ALS: a 2-sample Mendelian randomization study.

Gan Zhang, Linjing Zhang, Kailin Xia, Zhenhuang Zhuang, Tao Huang, Dongsheng Fan

Abstract read
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In one paragraph

Article in Journal of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.1field-weighted citation impact, top 20% 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

7 citing papers in PubMed, 12 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

6 authors at 1 institution in 1 country.

Gan ZhangDepartment of Neurology, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.
Linjing ZhangDepartment of Neurology, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.
Kailin XiaDepartment of Neurology, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.
Zhenhuang ZhuangDepartment of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China.
Tao Huang *Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China.
Dongsheng Fan *Department of Neurology, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. dsfan2010@aliyun.com.ORCID http://orcid.org/0000-0002-3129-9821
Peking University · CN

Funding

National Natural Science Foundation of China 81030019National Natural Science Foundation of China 81873784
6 · The paper itself

Abstract

backgroundObservational studies have indicated that there is a high prevalence of habitual sleep disturbances in amyotrophic lateral sclerosis (ALS). However, the actual relationship between these symptoms and ALS remains unclear.

methodsWe used 2-sample Mendelian randomization to determine whether the sleep disturbances associated with ALS are also related to the risk of ALS. The summary statistics we used were from recent, large genome-wide association studies on daytime sleepiness and other night sleep traits (n = 85,670-452,071) and ALS (n = 20,806 cases, n = 59,804 controls). The inverse variance-weighted (IVW) method was used as the main method for assessing causality.

resultsDaytime sleepiness might increase the risk of ALS (IVW odds ratio = 2.45, 95% confidence interval: 1.15-5.21; P = 0.020). ALS was not associated with sleep efficiency, number of sleep episodes or sleep duration.

conclusionsOur results provide novel evidence that daytime sleepiness increases the risk of ALS and points out the importance of daytime sleepiness that often goes unnoticed in ALS.

Indexed as

Amyotrophic Lateral SclerosisDisorders of Excessive SomnolenceGenome-Wide Association StudyHumansMendelian Randomization AnalysisSleepAmyotrophic lateral sclerosisDaytime sleepinessMendelian randomizationSleep disturbances

Identifiers

PMID33914140
OpenAlexW3159799449

What OpenQuestion holds

Textmetadata
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.