Comparison of a Visual Analogue Scale and Lake Louise Symptom Scores for Acute Mountain Sickness

Assessment of the presence and severity of acute mountain sickness (AMS) is based on subjective reporting of the sensation of symptoms. The Lake Louise symptom scoring system (LLS) uses categorical variables to rate the intensity of AMS-related symptoms (headache, gastrointestinal distress, dizziness, fatigue, sleep quality) on 4-point ordinal scales; the sum of the answers is the LLS self-score (range 0–15). Recent publications indicate a potential for a visual analogue scale (VAS) to quantify AMS. We tested the hypothesis that overall and single-item VAS and LLS scores scale linearly. We asked 14 unacclimatized male subjects [age 41 (14), mean (SD) yr; height 176 (3)?cm; weight 75 (9)?kg] who spent 2 days at 3647?m and 4 days at 4560?m to fill out LLS questionnaires, with a VAS for each item (i) and a VAS for the overall (o) sensation of AMS, twice a day (n?=?172). Even though correlated (r?=?0.84), the relationship between LLS(o) and VAS(o) was distorted, showing a threshold effect for LLS(o) scores below 5, with most VAS(o) scores on one side of the identity line. Similar threshold effects were seen for the LLS(i) and VAS(i) scores. These findings indicate nonlinear scaling characteristics that render difficult a direct comparison of studies done with either VAS or LLS alone
 
Citation proposal
Bengt Kayser (Institute of movement sciences and sports medicine, University of Geneva) - Andrea Aliverti (The Laboratory of Biomedical Technologies,Polytechnic of Milan) - Riccardo Pellegrino (Allergy and Pathophysiology Respiratory, Hospital S. Croce and Carle in Cuneo) - Raffaele Dellacà (The Laboratory of Biomedical Technologies,Polytechnic of Milan) - Marco Quaranta (The Laboratory of Biomedical Technologies,Polytechnic of Milan) - Pasquale Pompilio (The Laboratory of Biomedical Technologies,Polytechnic of Milan) - Giuseppe Miserocchi (Department of Experimental Medicine, University of Milano-Bicocca) - Annalisa Cogo (Biomedical Research Centre applied to sport, University of Ferrara) (2010) . Comparison of a Visual Analogue Scale and Lake Louise Symptom Scores for Acute Mountain Sickness. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/f92362c4-3b57-4e3c-9c3d-2b64d2501258
 

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2010-03-31T00:00:00
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High Altitude Medicine & Biology volume 11
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1
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69-72
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High Altitude Medicine & Biology. Spring 2010, 11(1): 69-72. doi:10.1089/ham.2009.1046.
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  • acute mountain sickness , visual analogue scale , symptoms , symptom scoring system , comparison
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  • The Lake Louise
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  • high altitude
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  • Health
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Abstract:"Comparison of a Visual Analogue Scale and Lake Louise Symptom Scores for Acute Mountain Sickness."  

Abstract:"Comparison of a Visual Analogue Scale and Lake Louise Symptom Scores for Acute Mountain Sickness."

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“Comparison of a Visual Analogue Scale and Lake Louise Symptom Scores for Acute Mountain Sickness”

Bengt Kayser, Andrea Aliverti, Riccardo Pellegrino, Raffaele Dellaca, Marco Quaranta, Pasquale Pompilio, Giuseppe Miserocchi and ,Annalisa Cogo.

High Altitude Medicine & Biology. Spring 2010, 11(1): 69-72. doi:10.1089/ham.2009.1046.

Published in Volume: 11 Issue 1: March 31, 2010

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f92362c4-3b57-4e3c-9c3d-2b64d2501258   XML
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2011-10-29T16:37:20
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