Relationship Between Air Quality and the Respiratory Status of Asthmatics in an Area of High Oxidant Pollution in Los Angeles County
Author: Henry Gong
Publisher:
Published: 1987
Total Pages: 454
ISBN-13:
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Author: Henry Gong
Publisher:
Published: 1987
Total Pages: 454
ISBN-13:
DOWNLOAD EBOOKAuthor: California. Air Resources Board
Publisher:
Published: 1987
Total Pages: 226
ISBN-13:
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Publisher:
Published: 1980
Total Pages:
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DOWNLOAD EBOOKDaily asthma attack diaries of sixteen panels of asthmatics residing in the Los Angeles area were collected by the Environmental Protection Agency for 34 week periods during the years 1972 to 1975. These data are examined here for the relationship between daily attack occurrence and daily levels of photochemical oxidant, total suspended particulates, minimum temperature, relative humidity, and average wind speed. A separate multiple logistic regression is used for each panelist's attack data. Variables representing the presence or absence of attack on the preceding day, as well as day of week and time since the start of the study, are included in the regressions. The most significant predictor of attacks was the presence of an attack on the preceding day. On the average, the panelists tended to have increased attacks on days with high oxidant and particulate pollution, on cool days, and during the first two months of the study. Panelists' attack propensity also differed by day of week; in particular they had more attacks on Saturdays (the last day of the weekly reporting period) than on Sundays. Each panelist's regression coefficients are classified according to his age, sex, hay fever status and self-assessed attack precursors; this classification is used to examine subgroups among the panelists with high coefficients corresponding to the above factors.
Author:
Publisher:
Published: 1995
Total Pages: 196
ISBN-13:
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Published: 2003
Total Pages: 1490
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Published: 2009
Total Pages: 210
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Publisher:
Published: 1988
Total Pages: 1198
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DOWNLOAD EBOOKAuthor: Roger Detels
Publisher:
Published: 1986
Total Pages: 98
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DOWNLOAD EBOOKAuthor: Sponsored by The Health Effects Institute
Publisher: National Academies Press
Published: 1988-01-01
Total Pages: 703
ISBN-13: 0309037263
DOWNLOAD EBOOK"The combination of scientific and institutional integrity represented by this book is unusual. It should be a model for future endeavors to help quantify environmental risk as a basis for good decisionmaking." â€"William D. Ruckelshaus, from the foreword. This volume, prepared under the auspices of the Health Effects Institute, an independent research organization created and funded jointly by the Environmental Protection Agency and the automobile industry, brings together experts on atmospheric exposure and on the biological effects of toxic substances to examine what is knownâ€"and not knownâ€"about the human health risks of automotive emissions.
Author: Veronica Kun
Publisher:
Published: 1993
Total Pages: 88
ISBN-13:
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