Changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Iran

OBJECTIVESThis study was conducted to assess changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Semnan, Iran during 2012-2016. METHODSThis quasi-experimental study included 100 workers at a chlorine production plant in Semnan during 2012-...

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Published in:Epidemiology and health 2020, 42(0), , pp.1-7
Main Authors: Pahlevan, Daryoush, Shomali, Amir, Pooryahya, Sara, Mansori, Kamyar, Mirmohammadkhani, Majid, Malek, Farhad
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Language:English
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chlorine gas
iran
Original
protective interventions
quasi-experimental study
spirometric parameters
예방의학
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container_title Epidemiology and health
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creator Pahlevan, Daryoush
Shomali, Amir
Pooryahya, Sara
Mansori, Kamyar
Mirmohammadkhani, Majid
Malek, Farhad
description OBJECTIVESThis study was conducted to assess changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Semnan, Iran during 2012-2016. METHODSThis quasi-experimental study included 100 workers at a chlorine production plant in Semnan during 2012-2016. Spirometric parameters (forced vital capacity [FVC], forced expiratory volume in 1 second [FEV1], FEV1/FVC, peak expiratory flow [PEF], and PEF occurring in the middle 50% of the patient's exhaled volume [PEF 25-75%]) were measured in all workers before the initial intervention in 2012. Protective interventions were then implemented for 4 consecutive years and the parameters were measured annually. A multivariable linear regression model was used to assess the factors affecting spirometric parameters before and after the protective interventions in SPSS version 24. RESULTSThe mean values of all spirometric parameters significantly increased after the protective interventions (p
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METHODSThis quasi-experimental study included 100 workers at a chlorine production plant in Semnan during 2012-2016. Spirometric parameters (forced vital capacity [FVC], forced expiratory volume in 1 second [FEV1], FEV1/FVC, peak expiratory flow [PEF], and PEF occurring in the middle 50% of the patient's exhaled volume [PEF 25-75%]) were measured in all workers before the initial intervention in 2012. Protective interventions were then implemented for 4 consecutive years and the parameters were measured annually. A multivariable linear regression model was used to assess the factors affecting spirometric parameters before and after the protective interventions in SPSS version 24. RESULTSThe mean values of all spirometric parameters significantly increased after the protective interventions (p&lt;0.05). Multivariable linear regression showed that age (β=-0.40), body mass index (BMI) (β=0.71; 95% confidence interval [CI], 0.11 to 1.31), and type of mask (β=-7.88; 95% CI, -15.96 to -0.46) had significant effects on the mean difference in FVC. Similarly, age (β=-0.35; 95% CI, -0.70 to -0.01), BMI (β=0.80; 95% CI, 0.20 to 1.41) and type of mask (β=-8.88; 95% CI, -16.98 to -0.79) had significant associations with the mean difference in FEV1. The type of mask (β=-12.81; 95% CI, -25.01 to -0.60) had a significant effect on the mean difference in PEF. CONCLUSIONSAll spirometric parameters significantly increased in workers after protective interventions were implemented. Therefore, protective interventions to prevent respiratory disorders in workers exposed to chlorine gas are suggested.</description><identifier>EISSN: 2092-7193</identifier><identifier>DOI: 10.4178/epih.e2020041</identifier><identifier>PMID: 32512658</identifier><language>eng</language><publisher>Korean Society of Epidemiology</publisher><subject>chlorine gas ; iran ; Original ; protective interventions ; quasi-experimental study ; spirometric parameters ; 예방의학</subject><ispartof>Epidemiology and Health, 2020, 42(0), , pp.1-7</ispartof><rights>2020, Korean Society of Epidemiology 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7644930/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7644930/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,27924,27925,53791,53793</link.rule.ids><backlink>$$Uhttps://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART002662869$$DAccess content in National Research Foundation of Korea (NRF)$$Hfree_for_read</backlink></links><search><creatorcontrib>Pahlevan, Daryoush</creatorcontrib><creatorcontrib>Shomali, Amir</creatorcontrib><creatorcontrib>Pooryahya, Sara</creatorcontrib><creatorcontrib>Mansori, Kamyar</creatorcontrib><creatorcontrib>Mirmohammadkhani, Majid</creatorcontrib><creatorcontrib>Malek, Farhad</creatorcontrib><title>Changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Iran</title><title>Epidemiology and health</title><description>OBJECTIVESThis study was conducted to assess changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Semnan, Iran during 2012-2016. METHODSThis quasi-experimental study included 100 workers at a chlorine production plant in Semnan during 2012-2016. Spirometric parameters (forced vital capacity [FVC], forced expiratory volume in 1 second [FEV1], FEV1/FVC, peak expiratory flow [PEF], and PEF occurring in the middle 50% of the patient's exhaled volume [PEF 25-75%]) were measured in all workers before the initial intervention in 2012. Protective interventions were then implemented for 4 consecutive years and the parameters were measured annually. A multivariable linear regression model was used to assess the factors affecting spirometric parameters before and after the protective interventions in SPSS version 24. RESULTSThe mean values of all spirometric parameters significantly increased after the protective interventions (p&lt;0.05). Multivariable linear regression showed that age (β=-0.40), body mass index (BMI) (β=0.71; 95% confidence interval [CI], 0.11 to 1.31), and type of mask (β=-7.88; 95% CI, -15.96 to -0.46) had significant effects on the mean difference in FVC. Similarly, age (β=-0.35; 95% CI, -0.70 to -0.01), BMI (β=0.80; 95% CI, 0.20 to 1.41) and type of mask (β=-8.88; 95% CI, -16.98 to -0.79) had significant associations with the mean difference in FEV1. The type of mask (β=-12.81; 95% CI, -25.01 to -0.60) had a significant effect on the mean difference in PEF. CONCLUSIONSAll spirometric parameters significantly increased in workers after protective interventions were implemented. Therefore, protective interventions to prevent respiratory disorders in workers exposed to chlorine gas are suggested.</description><subject>chlorine gas</subject><subject>iran</subject><subject>Original</subject><subject>protective interventions</subject><subject>quasi-experimental study</subject><subject>spirometric parameters</subject><subject>예방의학</subject><issn>2092-7193</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNpVkEFvGyEQhVGlqonSHHvnmB6cAssucIkUWWlrKVKlKD0jFgabeBe2LOuo_z7YziVcHpp5883TIPSNkltOhfwBU9jdAiOMEE4_oUtGFFsJqpoLdD3PL6Q-zgXp6Bd00bCWsq6Vl2hZ70zcwoxDxPMUchqh5GDxZLKpX8gzNr4KnnIqYEs4QLXWwgFiCSnW9pjiFr-mvD-ZCzbY7oaUQ4TjkFvs0YenwcRy3LLJJn5Fn70ZZrh-1yv09-fD8_r36vHPr836_nHlGt6UFeudlKRtTK-k7D0QLhm3XEje005KsMxK6Nuuhd5TaoQkBKwUREDrOuJZc4W-n7kxe723QScTTrpNep_1_dPzRquOKcZE9W7OXpfMi55yGE3-fxo4FVLeapNLsANoB9ZaKZVXjvPWWwPgueQ1T0eZIK6y7s6saelHcLbeKpvhA_RjJ4ZdzXTQouNcNaQCbt4BOf1bYC56DLOFoR4R0jJrximlRDU19xtNI6FK</recordid><startdate>20200606</startdate><enddate>20200606</enddate><creator>Pahlevan, Daryoush</creator><creator>Shomali, Amir</creator><creator>Pooryahya, Sara</creator><creator>Mansori, Kamyar</creator><creator>Mirmohammadkhani, Majid</creator><creator>Malek, Farhad</creator><general>Korean Society of Epidemiology</general><general>한국역학회</general><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><scope>ACYCR</scope></search><sort><creationdate>20200606</creationdate><title>Changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Iran</title><author>Pahlevan, Daryoush ; Shomali, Amir ; Pooryahya, Sara ; Mansori, Kamyar ; Mirmohammadkhani, Majid ; Malek, Farhad</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-d343t-2bd88053ab988bfe04824c4784b1688ec2c8eb565ebf11a7800ec8707e5d60f23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>chlorine gas</topic><topic>iran</topic><topic>Original</topic><topic>protective interventions</topic><topic>quasi-experimental study</topic><topic>spirometric parameters</topic><topic>예방의학</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pahlevan, Daryoush</creatorcontrib><creatorcontrib>Shomali, Amir</creatorcontrib><creatorcontrib>Pooryahya, Sara</creatorcontrib><creatorcontrib>Mansori, Kamyar</creatorcontrib><creatorcontrib>Mirmohammadkhani, Majid</creatorcontrib><creatorcontrib>Malek, Farhad</creatorcontrib><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><collection>Korean Citation Index</collection><jtitle>Epidemiology and health</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pahlevan, Daryoush</au><au>Shomali, Amir</au><au>Pooryahya, Sara</au><au>Mansori, Kamyar</au><au>Mirmohammadkhani, Majid</au><au>Malek, Farhad</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Iran</atitle><jtitle>Epidemiology and health</jtitle><date>2020-06-06</date><risdate>2020</risdate><volume>42</volume><spage>e2020041</spage><epage>e2020041</epage><pages>e2020041-e2020041</pages><eissn>2092-7193</eissn><abstract>OBJECTIVESThis study was conducted to assess changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Semnan, Iran during 2012-2016. METHODSThis quasi-experimental study included 100 workers at a chlorine production plant in Semnan during 2012-2016. Spirometric parameters (forced vital capacity [FVC], forced expiratory volume in 1 second [FEV1], FEV1/FVC, peak expiratory flow [PEF], and PEF occurring in the middle 50% of the patient's exhaled volume [PEF 25-75%]) were measured in all workers before the initial intervention in 2012. Protective interventions were then implemented for 4 consecutive years and the parameters were measured annually. A multivariable linear regression model was used to assess the factors affecting spirometric parameters before and after the protective interventions in SPSS version 24. RESULTSThe mean values of all spirometric parameters significantly increased after the protective interventions (p&lt;0.05). Multivariable linear regression showed that age (β=-0.40), body mass index (BMI) (β=0.71; 95% confidence interval [CI], 0.11 to 1.31), and type of mask (β=-7.88; 95% CI, -15.96 to -0.46) had significant effects on the mean difference in FVC. Similarly, age (β=-0.35; 95% CI, -0.70 to -0.01), BMI (β=0.80; 95% CI, 0.20 to 1.41) and type of mask (β=-8.88; 95% CI, -16.98 to -0.79) had significant associations with the mean difference in FEV1. The type of mask (β=-12.81; 95% CI, -25.01 to -0.60) had a significant effect on the mean difference in PEF. CONCLUSIONSAll spirometric parameters significantly increased in workers after protective interventions were implemented. Therefore, protective interventions to prevent respiratory disorders in workers exposed to chlorine gas are suggested.</abstract><pub>Korean Society of Epidemiology</pub><pmid>32512658</pmid><doi>10.4178/epih.e2020041</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects chlorine gas
iran
Original
protective interventions
quasi-experimental study
spirometric parameters
예방의학
title Changes in spirometric parameters after protective interventions among workers at a chlorine production plant in Iran
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