season (version 0.3.15)

CVD: Cardiovascular Deaths in Los Angeles, 1987--2000

Description

Monthly number of deaths from cardiovascular disease in people aged 75 and over in Los Angeles for the years 1987 to 2000.

Usage

CVD

Format

A data frame with 168 observations on the following 8 variables.

year

year of death

month

month of death

yrmon

a combination of year and month: \(year+(month-1)/12\)

cvd

monthly number of CVD deaths

tmpd

mean monthly temperature (degrees Fahrenheit)

pop

Los Angeles population aged 75+ in the year 2000 (this value is constant as only one year was available, but in general the population will (of course) change over time)

ndaysmonth

number of days in each month (used as an offset)

adj

adjusted number of CVD deaths per month using a standardised month length. Monthly number of CVD deaths multiplied by (365.25/12)/ndaysmonth. So the standard month length is 30.4 days.

References

Samet JM, Dominici F, Zeger SL, Schwartz J, Dockery DW (2000). The National Morbidity, Mortality, and Air Pollution Study, Part I: Methods and Methodologic Issues. Research Report 94, Health Effects Institute, Cambridge MA.

Examples

# NOT RUN {
data(CVD)
plot(CVD$yrmon, CVD$cvd, type='o', xlab='Date',
     ylab='Number of CVD deaths per month')

# }