potuse | R Documentation |
The National Youth Survey collected a sample of 11 to 17 year olds - 117 boys and 120 girls - asking questions about marijuana usage.
A data frame with 486 observations on the following 7 variables.
1=Male, 2=Female
1=never used, 2=used no more than once a month, 3=used more than once a month in 1976
1=never used, 2=used no more than once a month, 3=used more than once a month in 1977
1=never used, 2=used no more than once a month, 3=used more than once a month in 1978
1=never used, 2=used no more than once a month, 3=used more than once a month in 1979
1=never used, 2=used no more than once a month, 3=used more than once a month in 1980
Number of cases in this category
ICPSR, University of Michigan
Lang J., McDonald, J and Smith P. (1999) "Association-Marginal Modeling of Mutlivariate Categorical Responses: A Maximum Likelihood Approach" JASA 94, 1161-
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