pollution | R Documentation |
Excessive air pollution is thought to have a negative long-term effect on health. In this study, the “pollution potential” (the product of the tons emitted per day per square kilometer of a pollutant and a dispersion factor which accounts for mixing height, wind speed, number of episode days, and dimension of the area over which measurements were taken) of three pollutants (hydrocarbons, nitrogen oxides, and sulfur dioxide) was determined for 60 metropolitan statistical areas in the United States. The outcome for this analysis is the total age-adjusted mortality rate in the metropolitan area. To account for potentially confounding effects, a number of demographic variables were included in the analysis as well.
y
: Total age-adjusted mortality from all causes (Annual
deaths per 100,000 people)
X
: Rows of X
are labeled with the name of the
metropolitan area; columns are as follows:
Precip
: Mean annual precipitation (inches)
Humidity
: Percent relative humidity (annual average at
1:00pm)
JanTemp
: Mean January temperature (degrees F)
JulyTemp
: Mean July temperature (degrees F)
Over65
: Percentage of the population aged 65 years or over
House
: Population per household
Educ
: Median number of school years completed for persons
25 years or older
Sound
: Percentage of the housing that is sound with all
facilities
Density
: Population density (in persons per square mile of
urbanized area)
NonWhite
: Percentage of population that is nonwhite
WhiteCol
: Percentage of employment in white collar
occupations
Poor
: Percentage of households with annual income under
$3,000 in 1960
HC
: Pollution potential of hydrocarbons
NOX
: Pollution potential of oxides of nitrogen
SO2
: Pollution potential of sulfur dioxide
n = 60
p = 15
I obtained the data from the Sleuth3 package. The original reference is:
McDonald GC and Schwing RC (1973). Instabilities of Regression Estimates Relating Air Pollution to Mortality. Technometrics, 15: 463-481.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.