The 2007 evaluation for all cocaine-addicted patients admitted between 15th January 2004 and 31st July 2006.

Summary of findings

  • The sample comprised of all cocaine-addicted patients who entered treatment between 15th January 2004 to 31st August 2006 and stayed in treatment for one or more days.
    141 one patients met these criteria, 74 from Scotland, 66 from the Netherlands, and 1 from the USA.
  • Scottish patients’ average age of 34 years was significantly lower than the Dutch patients’ average age of 37 years.
  • Scottish patients’ average CISS total score of 14.1 was significantly higher than the Dutch patients’ average CISS total score of 12.6.
  • Patients’ greatest problems were with drug or alcohol use, lack of occupation, lack of support, and psychological problems.
  • Patients dependent only on cocaine and alcohol tended to have fewer problems with Viral Risk and Criminal Behaviour.
  • Patients with higher levels of dysfunction at intake tended to either drop out of primary or go on to extended care.
  • In comparison to those entering extended care, drop outs from primary (excluding 21 primary completers) were more likely to have greater social functioning problems, greater criminal involvement, and greater compliance problems.
  • 48% of patients left treatment prematurely. However, 92% of patients completed detoxification.
  • The average treatment duration of 19 weeks for patients completing treatment was significantly longer than the prematurely discharged patients’ average treatment duration of 8 weeks.
  • The average CISS total score of 12.3 for patients completing treatment was significantly lower than the prematurely discharged patients’ average CISS score of 14.5.
  • At treatment entry, completers tended to have fewer social functioning problems, fewer occupation problems, less criminal involvement, and fewer compliance problems.
  • Patients’ age, gender, nationality, and drug use patterns were unrelated to premature discharge.
  • Follow-ups were successfully completed on 107 of the 141 patients (76%).
  • The average follow-up period was 79 weeks.
  • Patients completing treatment were significantly more likely to have a good outcome.
  • The average treatment duration (16 weeks) of the 84 good outcome patients was significantly longer than the average treatment duration (10 weeks) of the 57 poor outcome patients.
  • Patients entering extended care were significantly more likely to have a good outcome.
  • Patients’ gender, nationality, drug use pattern, age, and CISS total score at treatment entry were unrelated to outcome.
  • There was no significant relationship between CISS total scores at treatment entry and subsequent outcome among the 60 patients who did not go into extended care.
  • Among the 81 patients entering extended care, the average CISS score of 12.8 for patients with a good outcome was significantly lower than the poor outcome patients’ average CISS score of 14.2.
  • Reductions in all of the 10 CISS outcome domains were highly significant. Thus indicating that reductions in drug/alcohol use were generally accompanied by improvements in all other aspects of the patients’ lives.
  • For all 141 patients, 92% successfully completed detoxification.

For all 141 patients, the following ‘Success’ rates are conservatively based on the assumption that the 34 patients not followed-up all showed no improvement or otherwise had poor outcomes.

  • Being totally abstinent from all drugs or alcohol at follow-up 46%
  • Achieving low problem severity at follow-up (CISS < 7, see appendix) 60%
  • Showing any reduction in measured levels of dysfunction 74%

For the 73 Patients who completed all their treatment the following ‘Success’ rates are conservatively based on the assumption that the 10 patients not followed-up all showed no improvement or otherwise had poor outcomes.

  • Being totally abstinent from all drugs or alcohol at follow-up 66%
  • Achieving low problem severity at follow-up (CISS < 7, see appendix) 78%
  • Showing any reduction in measured levels of dysfunction 84%

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