A data frame with 180 observations and 5 variables.
Freq
frequency.
Alcohol
factor indicating daily alcohol consumption: less
than 1 unit (<1), 1-2 units (1-2) or more than 2 units (>2).
1 unit is approximately 1 bottle of beer or 4cl 40% alcohol.
Income
factor indicating income group in 1000 DKK (0-50,
50-100, 100-150, >150).
Status
factor indicating marriage status (Widow, Married,
Unmarried).
Urban
factor indicating urbanization: Copenhagen
(Copenhagen), Suburbian Copenhagen (SubCopenhagen), three largest
cities (LargeCity), other cities (City), countryside (Country).
References
E. B. Andersen (1991),
The Statistical Analysis of Categorical Data.
2nd edition.
Springer-Verlag, Berlin.