The Gambling Symptom Assessment Scale (G-SAS): a reliability and validity study

Area of Science:

• Psychiatry
• Clinical Psychology
• Behavioral Science

Background:

• Pathological gambling disorder (PGD) is a significant mental health concern.
• Accurate assessment tools are crucial for evaluating treatment efficacy in PGD.
• The Yale-Brown Obsessive-Compulsive Scale modified for Pathological Gambling (PG-YBOCS) is an established measure.

Purpose of the Study:

• To evaluate the reliability and validity of the Gambling Symptom Assessment Scale (G-SAS).
• To compare the G-SAS performance against the established PG-YBOCS in patients with PGD.

Main Methods:

• A cohort of 207 patients diagnosed with DSM-IV Pathological Gambling Disorder participated.
• Patients completed the G-SAS and PG-YBOCS at baseline and weekly/biweekly for 12 weeks.
• Test-retest reliability was assessed using week 1-2 data; validity was assessed using weekly/biweekly data.

Main Results:

• The G-SAS demonstrated statistically significant test-retest reliability.
• Excellent correlations were observed between the G-SAS and the PG-YBOCS.
• Strong correlations were also found between the G-SAS and Clinical Global Impression ratings.

Conclusions:

• The G-SAS is a reliable and valid instrument for assessing pathological gambling symptoms.
• The G-SAS is suitable for use in drug treatment studies to monitor symptom changes in PGD patients.