This study examines the trends in heat-related mortality in the eastern 46 cities of the U.S. with population over 100,000 from 1974-1988. The study investigates if daily mortality is correlated with apparent temperature and latitude along the east coast. The study examines if each city exhibits a threshold apparent temperature where a sudden increase in number of daily mortality occurs.
Pearson’s Product-Moment Correlation and simple linear regression analyses between two variables, daily mortality and 3 P.M. LST (Local Standard Time) apparent temperature with 1-day lag, are conducted to identify the association between them. Multiple linear regression analysis with two independent variables, apparent temperature and latitude, is conducted to identify if daily mortality changes significantly with latitude. The study conducts independent samples two-tailed t-tests for each city to determine above which apparent temperature daily mortality is significantly elevated.
Daily mortality is associated with overall apparent temperature in 27 cities. Decline of daily mortality as apparent temperature increases is not found in any of the study areas. Thirty-one cities exhibit threshold apparent temperatures with a notable difference between northern and southern cities. Above 27°C (80°F) and 32°C (90°F), the study finds that daily mortality is significantly affected by both apparent temperature and latitude. There are some significant causal relationships between the two predictors, apparent temperature and latitude, and daily mortality during hot and humid summers in the eastern U.S. People living in latitudes north of 40°N are at much greater risk than people in lower latitudes during extreme heat events.
|Advisor:||Herman, Redina L.|
|Commitee:||Deng, Yongxin, Greene, Raymond|
|School:||Western Illinois University|
|School Location:||United States -- Illinois|
|Source:||MAI 50/04M, Masters Abstracts International|
|Subjects:||Geography, Meteorology, Public health, Epidemiology|
|Keywords:||Apparent temperature, Climate, Heat, Index, Mortality, Weather|
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