Subtyping study of a pathological gamblers sample.

Objective: To classify into subgroups a sample of pathological gambling (PG) patients according to personality variables and to describe the subgroups at a clinical level.

Method: PG patients (n = 1171) were assessed with the South Oaks Gambling Screen; the Temperament and Character Inventory-Revised; the Symptom Checklist-90-Revised; Eysenck's Impulsivity Scales, a diagnostic questionnaire for the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) PG criteria; and the Structured Clinical Interview for the DSM-IV, Axis I disorders, substance use module. Clinical measures were collected through a semi-structured interview.