Evidence map›Paper›PMID 24130729›Full record

ArticlePloS one2013

A prospective epidemiological study of acute mountain sickness in Nepalese pilgrims ascending to high altitude (4380 m).

Martin J MacInnis, Eric A Carter, Michael G Freeman, Bidur Prasad Pandit, Ashmita Siwakoti, Ankita Subedi, Utsav Timalsina, Nadia Widmer, Ghan Bahadur Thapa, Michael S Koehle and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
3.0field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 50 citations in OpenAlex.

  1. Pooled it
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  6. Review
  7. Article
  8. High-altitude illness: Menace in Himalayas of Nepal.Annals of medicine and surgery (2012) · 2022
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  16. Observational
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  19. Impact of rapid ascent to high altitude on sleep.Sleep & breathing = Schlaf & Atmung · 2015
    Article
  20. Effect of hypobaric hypoxia on cognitive functions and potential therapeutic agents.The Malaysian journal of medical sciences : MJMS · 2014
    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

11 authors at 3 institutions in 3 countries.

Martin J MacInnisSchool of Kinesiology, University of British Columbia, Vancouver, Canada.
Eric A Carter
Michael G Freeman
Bidur Prasad Pandit
Ashmita Siwakoti
Ankita Subedi
Utsav Timalsina
Nadia Widmer
Ghan Bahadur Thapa
Michael S Koehle
Jim L Rupert
Tribhuvan University Teaching Hospital · NPUniversity of British Columbia · CAUniversity of Glasgow · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEach year, thousands of pilgrims travel to the Janai Purnima festival in Gosainkunda, Nepal (4380 m), ascending rapidly and often without the aid of pharmaceutical prophylaxis.

methodsDuring the 2012 Janai Purnima festival, 538 subjects were recruited in Dhunche (1950 m) before ascending to Gosainkunda. Through interviews, subjects provided demographic information, ratings of AMS symptoms (Lake Louise Scores; LLS), ascent profiles, and strategies for prophylaxis.

resultsIn the 491 subjects (91% follow-up rate) who were assessed upon arrival at Gosainkunda, the incidence of AMS was 34.0%. AMS was more common in females than in males (RR = 1.57; 95% CI = 1.23, 2.00), and the AMS incidence was greater in subjects >35 years compared to subjects ≤35 years (RR = 1.63; 95% CI = 1.36, 1.95). There was a greater incidence of AMS in subjects who chose to use garlic as a prophylactic compared to those who did not (RR = 1.69; 95% CI = 1.26, 2.28). Although the LLS of brothers had a moderate correlation (intraclass correlation = 0.40, p = 0.023), sibling AMS status was a weak predictor of AMS.

conclusionsThe incidence of AMS upon reaching 4380 m was 34% in a large population of Nepalese pilgrims. Sex, age, and ascent rate were significant factors in the development of AMS, and traditional Nepalese remedies were ineffective in the prevention of AMS.

Indexed as

AdultAltitudeAltitude SicknessFemaleHumansMaleMiddle AgedNepalProspective StudiesYoung Adult

Identifiers

PMID24130729
PMCPMC3794000
OpenAlexW2099554593

What OpenQuestion holds

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LicenceCC BY
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.