Skin cancer in women
The data describe the incidence of nonmelanoma skin cancer for women stratified by age in Minneapolis (St. Paul) and Dallas (Fort Worth). See Kleinbaum et al. (2013, page 751).
data(skincancer)
A data frame with 16 rows and 4 variables:
a numeric vector giving the nonmelanoma skin cancer counts.
a factor giving the city to which correspond the skin cancer counts: "St.Paul" and "Ft.Worth".
a factor giving the age range to which correspond the skin cancer counts: "15-24", "25-34", "35-44", "45-54", "55-64", "65-74", "75-84" and "85+".
a numeric vector giving the population of women.
Kleinbaum D., Kupper L., Nizam A. and Rosenberg E.S. (2013) Applied Regression Analysis and other Multivariable Methods, Fifth Edition, Cengage Learning, Boston.
barplot(1000*cases/population ~ city + age, beside=TRUE, col=c("yellow","blue"), data=skincancer) legend(1, 11, legend=c("St.Paul","Ft.Worth"), title="City", col=c("yellow","blue"), bty="n", cex=0.9, title.adj=0.2, y.intersp=0.1, x.intersp=0.3, pch=15)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.