SmokeOnset {mdhglm}

Smoke Onset Data

Description

For 1,556 students in the Los Angels area, onset of smoking are observed at each of three timepoints a1; a2 and a3 where a1 is starting time for investigation, a2 is the 1 year follow-up and a3 is the 2 year follow-up (Hedeker, et al., 2015). These event times are grouped at the three intervals [0, a1), [a1, a2) and [a2, a3).

Usage

data("SmokeOnset")

Format

A data frame with 1556 observations on the following 10 variables.

school

schools identifier in the Los Angels area

class

classrooms identifier

student

students identifier

smkonset

coded by i when the event occurs in the ith time interval

event

=1 (smoked), =0 (otherwise)

int

vector of ones representing intercept

SexMale

gender of the student (0=Female, 1=Male)

cc

indicating whether the school was randomized to a social-resistance classroom curriculum (1=Yes, 0=No)

tv

indicating whether the school was randomized to a media (television) intervention (1=Yes, 0=No)

cctv

indicating whether the school was randomized to CC combined with TV

References

Hedeker, D., Archer, K.J., Nordgren, R. and gibbons, R.D. (2015). mixor: Mixed-Effects Ordinal Regression Analysis. R package version 1.0.3.