marijuana {drm} | R Documentation |
This data set is from US National Youth Survey reporting a repeated questionnaire on marijuana use of 237 teenagers yearly from ages 13 to 17 on an ordinal scale.
data(marijuana)
This data frame contains the following columns:
female
male
13
14
15
16
17
Lang, JB, McDonald, JW, Smith, PWF. (1999). Association marginal modelling of multivariate categorical responses: A maximum likelihood approach. JASA, 94, 1161-1171.
Jokinen J, McDonald JW, Smith PWF. Meaningful regression and association models for clustered ordinal data. Sociological Methodology 2006; 36:173-199.