femsmoke {faraway}

Mortality due to smoking according age group in women

Description

In 1972-74, a survey of one in six residents of Whickham, near Newcastle, England was made. Twenty years later, this data recorded in a follow-up study. Only women who are current smokers or who have never smoked are included.

Format

A data frame with 28 observations on the following 4 variables.

y

observed count for given combination

smoker

a factor with levels yes no

dead

a factor with levels yes no

age

a factor with agegroup levels 18-24 25-34 35-44 45-54 55-64 65-74 75+

Source

D. Appleton, J. French, M. Vanderpump (1996) "Ignoring a Covariate: An Example of Simpson's Paradox" American Statistician, 50, 340-341