Of the original sample, 25 percent were working at the time of the study and 40 percent had been working or in full-time education at some point during the previous year. While there had been few prescription changes during the year, 6 percent of the sample had gone from linctus to intravenous drugs; other subjects had had their dosages increased or reduced. Treatment seemed to cut down the amount of money spent on illicit drugs, but did not entirely eliminate it. The findings showed that the re-attending group committed more crimes while away from the clinic and had more convictions and cases pending than the addicts who had remained in continuous treatment. The control group also used more illegal drugs and spent more money on them. 1 table and 5 references