The prevalence of symptomatic chronic bronchitis in two iron ore processing plants
Thesis (M.Sc.)--Memorial University of Newfoundland, 1983. Medicine Bibliography: leaves 76-86. This research was undertaken to study the prevalence of symptomatic chronic bronchitis in a group of mining and mill workers to determine if there was an association between symptomatic chronic bronchitis...
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ftmemorialunivdc:oai:collections.mun.ca:theses2/82625 2023-05-15T17:23:30+02:00 The prevalence of symptomatic chronic bronchitis in two iron ore processing plants Ryan, Mary Catherine, 1945- Memorial University of Newfoundland. Faculty of Medicine 1983 viii, 98 leaves : ill. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/82625 Eng eng Electronic Theses and Dissertations (19.92 MB) -- http://collections.mun.ca/PDFs/theses/Ryan_MaryCatherine.pdf 75251397 http://collections.mun.ca/cdm/ref/collection/theses2/id/82625 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Bronchitis Occupational diseases Tobacco--Physiological effect Text Electronic thesis or dissertation 1983 ftmemorialunivdc 2015-08-06T19:16:40Z Thesis (M.Sc.)--Memorial University of Newfoundland, 1983. Medicine Bibliography: leaves 76-86. This research was undertaken to study the prevalence of symptomatic chronic bronchitis in a group of mining and mill workers to determine if there was an association between symptomatic chronic bronchitis and tobacco smoking, length of dust exposure or age, individually or synergistically. -- Analyses were done by two statistical methods. First, bivariate analysis done by cross tabulations using Chi-square as a test of significance gave the following results. –- (a) There was a significant association between tobacco smoking and symptomatic chronic-bronchitis. This association held when controlled by age and length of dust exposure. –- (b) Age was not significantly associated to symptomatic chronic bronchitis. -- (c) Length of dust exposure was not significantly associated to symptomatic chronic bronchitis. -- Second, a log-linear analysis was used to test different models for associations among the variables. The results confirmed the association between symptomatic chronic bronchitis and smoking, and showed that there were some interactive effects between the independent variables, smoking, age and length of exposure which may be explained by the correlation between age and length of exposure and by some differences in smoking habits by age. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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English |
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Bronchitis Occupational diseases Tobacco--Physiological effect |
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Bronchitis Occupational diseases Tobacco--Physiological effect Ryan, Mary Catherine, 1945- The prevalence of symptomatic chronic bronchitis in two iron ore processing plants |
topic_facet |
Bronchitis Occupational diseases Tobacco--Physiological effect |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 1983. Medicine Bibliography: leaves 76-86. This research was undertaken to study the prevalence of symptomatic chronic bronchitis in a group of mining and mill workers to determine if there was an association between symptomatic chronic bronchitis and tobacco smoking, length of dust exposure or age, individually or synergistically. -- Analyses were done by two statistical methods. First, bivariate analysis done by cross tabulations using Chi-square as a test of significance gave the following results. –- (a) There was a significant association between tobacco smoking and symptomatic chronic-bronchitis. This association held when controlled by age and length of dust exposure. –- (b) Age was not significantly associated to symptomatic chronic bronchitis. -- (c) Length of dust exposure was not significantly associated to symptomatic chronic bronchitis. -- Second, a log-linear analysis was used to test different models for associations among the variables. The results confirmed the association between symptomatic chronic bronchitis and smoking, and showed that there were some interactive effects between the independent variables, smoking, age and length of exposure which may be explained by the correlation between age and length of exposure and by some differences in smoking habits by age. |
author2 |
Memorial University of Newfoundland. Faculty of Medicine |
format |
Thesis |
author |
Ryan, Mary Catherine, 1945- |
author_facet |
Ryan, Mary Catherine, 1945- |
author_sort |
Ryan, Mary Catherine, 1945- |
title |
The prevalence of symptomatic chronic bronchitis in two iron ore processing plants |
title_short |
The prevalence of symptomatic chronic bronchitis in two iron ore processing plants |
title_full |
The prevalence of symptomatic chronic bronchitis in two iron ore processing plants |
title_fullStr |
The prevalence of symptomatic chronic bronchitis in two iron ore processing plants |
title_full_unstemmed |
The prevalence of symptomatic chronic bronchitis in two iron ore processing plants |
title_sort |
prevalence of symptomatic chronic bronchitis in two iron ore processing plants |
publishDate |
1983 |
url |
http://collections.mun.ca/cdm/ref/collection/theses2/id/82625 |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (19.92 MB) -- http://collections.mun.ca/PDFs/theses/Ryan_MaryCatherine.pdf 75251397 http://collections.mun.ca/cdm/ref/collection/theses2/id/82625 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
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