A cross sectional analysis of air pollution’s impact of chronic respiratory disease in Ontario
department or school: Science, Faculty of
department or school: Statistics, Department of
data provider: DSpace
degree campus: UBCV
creator: Duddek, Christopher Alan
issued: 2009-02-26T23:25:10Z
issued: 1994
related degree: Master of Science - MSc
degree grantor: University of British Columbia
description: Does ambient air pollution in Canada pose a threat to respiratory health? For a study initiated by Health Canada, we combined analyses of micro-level data from both the 1990 Ontario Health Survey with an environmental air monitoring system to obtain a quantitative answer to the question. In contrast to studies designed to collect special purpose data, the Ontario Health Survey was not designed to address respiratory health issues. In spite of this, this cross sectional database was rich enough for modelling. We used asthma and emphysema as the response variables in assessing the impact of four pollutants estimated for summer and winter. Two analyses were conducted for each response variable, one incorporating survey de sign information the other ignoring it. Age, income, smoker type and sex were significantly related to asthma at a a = 5% level of confidence in both analyses. None of the pollutant covariates figured in the model. Using the classical x2 test for nested models as the criterion, the emphysema model achieved a better fit than the asthma model. Smoker type and age, in particular, were strongly related to emphysema; income and number of cigarettes smoked were significantly but less strongly related; summer N2O was marginally significant, depending on which of the two analyses was considered.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/5188
extent: 2555296 bytes
format: application/pdf
note: A Cross Sectional Analysis of Air Pollution’s Impacton Chronic Respiratory Disease in OntariobyChristopher Alan DuddekB.Sc. University of Manitoba, 1989A THESIS SUBMITTED IN PARTIAL FULFILLMENT OFTHE REQUIREMENTS FOR THE DEGREE OFMASTER OF SCIENCEinTHE FACULTY OF GRADUATE STUDIESDepartment of StatisticsWe accept this thesis as conformingto the uired s ndardL..THE UNIVERSITY OF BRITISH COLUMBIAAugust 1994©Christopher Alan Duddek, 1994In presenting this thesis in partial fulfilment of the requirements for an advanceddegree at the University of British Columbia, I agree that the Library shall make itfreely available for reference and study. I further agree that permission for extensivecopying of this thesis for scholarly purposes may be granted by the head of mydepartment or by his or her representatives. It is understood that copying orpublication of this thesis for financial gain shall not be allowed without my writtenpermission.(Signature)___________________________Department of cThe University of British ColumbiaVancouver, CanadaDate__________DE-6 (2)88)AbstractDoes ambient air pollution in Canada pose a threat to respiratory health? For astudy initiated by Health Canada, we combined analyses of micro-level data from boththe 1990 Ontario Health Survey with an environmental air monitoring system to obtain aquantitative answer to the question.In contrast to studies designed to collect special purpose data, the Ontario HealthSurvey was not designed to address respiratory health issues. In spite of this, this crosssectional database was rich enough for modelling. We used asthma and emphysema as theresponse variables in assessing the impact of four pollutants estimated for summer andwinter.Two analyses were conducted for each response variable, one incorporating survey design information the other ignoring it. Age, income, smoker type and sex were significantlyrelated to asthma at a a = 5% level of confidence in both analyses. None of the pollutantcovariates figured in …
has type: Thesis/Dissertation
date issued: 1994-11
is shown at: 10.14288/1.0087445
language: eng
degree discipline: Statistics
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/5188