parstum(faraway) R Documentation 

Marijuana and parent alcohol and drug use
Description
445 college students were classified according to both frequency of marijuana use and parental use of alcohol and psychoactive drugs. 

Usage
data(parstum)
Format
A data frame with 9 observations on the following 3 variables. 

parent
Number of parents using drugs or alcohol - a factor with levels Both Neither One 
student
Student usage of marijuana - a factor with levels Never Occasional Regular 
count
the number of cases 
> parstum
   parent    student count
1 Neither      Never   141
2 Neither Occasional    54
3 Neither    Regular    40
4     One      Never    68
5     One Occasional    44
6     One    Regular    51
7    Both      Never    17
8    Both Occasional    11
9    Both    Regular    19