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Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation

BACKGROUND: The thermal strain can be measured using subjective methods without the use of sensitive equipment. The purpose of the present study was the development and validation of an observational - perceptual heat strain risk assessment (OPHSRA) method. METHODS: This cross-sectional study, in 20...

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Autores principales: Yazdanirad, Saeid, Foroushani, Abbas Rahimi, Monazzam, Mohammad Reza, Dehghan, Habibollah, Golbabaei, Farideh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8717656/
https://www.ncbi.nlm.nih.gov/pubmed/34969389
http://dx.doi.org/10.1186/s12889-021-12325-z
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author Yazdanirad, Saeid
Foroushani, Abbas Rahimi
Monazzam, Mohammad Reza
Dehghan, Habibollah
Golbabaei, Farideh
author_facet Yazdanirad, Saeid
Foroushani, Abbas Rahimi
Monazzam, Mohammad Reza
Dehghan, Habibollah
Golbabaei, Farideh
author_sort Yazdanirad, Saeid
collection PubMed
description BACKGROUND: The thermal strain can be measured using subjective methods without the use of sensitive equipment. The purpose of the present study was the development and validation of an observational - perceptual heat strain risk assessment (OPHSRA) method. METHODS: This cross-sectional study, in 2019, was performed. At first, an observational-perceptual questionnaire was designed using effective items in producing heat strain. Then, the reliability and validity of the questionnaire were examined. Later, 201 male workers were asked to perform the routine tasks for 90 min under various climatic conditions after resting in a cool room. At the end of the activity, the tympanic temperature of the subjects was accurately measured. Also, the designed questionnaire was completed by researchers and participants. Then, the effect coefficients of the items were calculated and used for developing the novel index. At final, the index validity was investigated. RESULTS: The values of the content validity ratio (CVR), content validity index (CVI), and Cronbach’s coefficient alpha (α) of the designed questionnaire with 16 questions were equal to 0.793, 0.913, and 0.910, respectively. The results indicated that environmental, job, administrative, and clothing items assessed by the questionnaire with the coefficients of 0.860, 0.658, 0.783, and 0.566 had significant effects on the thermal strain, respectively. These coefficients were exploited to develop the index. The result revealed that the OPHSRA index justified 69% of the variations of the tympanic temperature (R(2) = 0.69). CONCLUSION: The novel index developed by the questionnaire had an acceptable validity. Therefore, this index can be used for estimating the risk of thermal strain in a variety of thermal conditions.
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spelling pubmed-87176562022-01-05 Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation Yazdanirad, Saeid Foroushani, Abbas Rahimi Monazzam, Mohammad Reza Dehghan, Habibollah Golbabaei, Farideh BMC Public Health Research Article BACKGROUND: The thermal strain can be measured using subjective methods without the use of sensitive equipment. The purpose of the present study was the development and validation of an observational - perceptual heat strain risk assessment (OPHSRA) method. METHODS: This cross-sectional study, in 2019, was performed. At first, an observational-perceptual questionnaire was designed using effective items in producing heat strain. Then, the reliability and validity of the questionnaire were examined. Later, 201 male workers were asked to perform the routine tasks for 90 min under various climatic conditions after resting in a cool room. At the end of the activity, the tympanic temperature of the subjects was accurately measured. Also, the designed questionnaire was completed by researchers and participants. Then, the effect coefficients of the items were calculated and used for developing the novel index. At final, the index validity was investigated. RESULTS: The values of the content validity ratio (CVR), content validity index (CVI), and Cronbach’s coefficient alpha (α) of the designed questionnaire with 16 questions were equal to 0.793, 0.913, and 0.910, respectively. The results indicated that environmental, job, administrative, and clothing items assessed by the questionnaire with the coefficients of 0.860, 0.658, 0.783, and 0.566 had significant effects on the thermal strain, respectively. These coefficients were exploited to develop the index. The result revealed that the OPHSRA index justified 69% of the variations of the tympanic temperature (R(2) = 0.69). CONCLUSION: The novel index developed by the questionnaire had an acceptable validity. Therefore, this index can be used for estimating the risk of thermal strain in a variety of thermal conditions. BioMed Central 2021-12-30 /pmc/articles/PMC8717656/ /pubmed/34969389 http://dx.doi.org/10.1186/s12889-021-12325-z Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Yazdanirad, Saeid
Foroushani, Abbas Rahimi
Monazzam, Mohammad Reza
Dehghan, Habibollah
Golbabaei, Farideh
Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation
title Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation
title_full Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation
title_fullStr Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation
title_full_unstemmed Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation
title_short Development of an observational - perceptual heat strain risk assessment (OPHSRA) index and its validation
title_sort development of an observational - perceptual heat strain risk assessment (ophsra) index and its validation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8717656/
https://www.ncbi.nlm.nih.gov/pubmed/34969389
http://dx.doi.org/10.1186/s12889-021-12325-z
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