Sequential patterns of multiple-drug use among high school students.

Only recently have multiple-drug use studies involving more than heroin and marijuana begun to be reported in the literature. Four of these studies have found evidence that multiple-drug use is a progressive phenomenon, although the particular pattern of multiple-drug use reported in different populations varies somewhat. This study examines the patterns of multiple-drug use reported by a random sample of 1,094 high school students living in greater New Haven, Conn in the 1972-1973 academic school year. Scalogram analysis reveals a progressive relationship for nine drugs: alcohol, marijuana, hashish, barbiturates, amphetamines, LSD, mescaline, cocaine, and heroin. Cigarettes and glue were not found to play a part in this pattern. The temporal order in which respondents reported that they had begun using each drug supports the results of scalogram analysis only in part.