This report compares the in-hospital and posthospital behavior of four groups of young psychiatric patients, those with a history of mild, moderate, or heavy drug use and those with a negative drug use history.
The measures of in-hospital behavior, covert drug use, and social affiliations, indicate that the greater the drug use prior to hospitalization, the more likely the patient was to continue drug use within the hospital and to associate primarily with other drug users.
The posthospital measure of community adjustment and degree of drug use, as determined by a six month follow-up interview, indicated that in-hospital drug use and social affiliations predict posthospital drug use only for those patients with a history of heavy drug use and that only among this latter group, is posthospital drug use related to poor posthospital adjustment.
Cohen M, Klein DF. Posthospital Adjustment of Psychiatrically Hospitalized Drug Users. Arch Gen Psychiatry. 1974;31(2):221–227. doi:10.1001/archpsyc.1974.01760140073013