Impact of different personality dimensions (NEO Five-Factor Inventory) on the outcome of alcohol-dependent patients 6 and 12 months after treatment

There is growing evidence that outpatient treatment might be equally effective as inpatient treatment for alcohol-dependent patients. Nevertheless, it is still unclear which patient group benefits most from outpatient treatment. Some personality traits such as emotional instability and high neuroticism are known risk factors for relapse after treatment. The purpose of the following study was to investigate the possible relationship between personality traits, measured by the NEO Five-Factor Inventory (NEO-FFI), and outcome after an intensive outpatient treatment program. Seventy-four alcohol-dependent patients who had completed the outpatient treatment program were included. Patients were examined at the beginning and end of the treatment, and 6 and 12 months after completion of the treatment. At the 6- and 12-month follow-up, 97% of the patients were successfully located and personally interviewed. Analyses revealed that 54 patients (73%) had been abstinent for the entire 12-month follow-up period. Twenty patients (27.4%) were found to be non-abstinent. Of these patients, 10 (13.5%) were found to be improved and 10 (13.5%) to have relapsed. Results indicate a remarkable stability of NEO-FFI scores over time, giving evidence for the usefulness of this instrument for the assessment of personality dimensions in alcohol-dependent patients. Patients who relapsed within 12 months after treatment had significantly higher scores on the personality domains of “neuroticism” and lower scores on the personality domains of “conscientiousness” than abstainers. These results are in line with prior research on this topic.