Survey of Youth in Custody, 1987
The 1987 Survey of Youth in Custody sampled juveniles and young adults in long-term, state-operated juvenile institutions. Residents of facilities at the end of 1987 were interviewed about family background, previous criminal history, and drug and alcohol use. Selected variables from the survey are contained in the syc data frame.
Lohr (1999). Sampling: Design and Analysis, Duxbury, p. 235–239 and 445.