%0 Journal Article
%@ 1929-0748
%I JMIR Publications
%V 8
%N 1
%P e12006
%T Development of the Gambling Disorder Identification Test (G-DIT): Protocol for a Delphi Method Study
%A Molander,Olof
%A Volberg,Rachel
%A Sundqvist,Kristina
%A Wennberg,Peter
%A Månsson,Viktor
%A Berman,Anne H
%+ Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Norra Stationsgatan 69, 7th floor, Stockholm, 113 64, Sweden, 46 700011241, olof.molander@ki.se
%K consensus methods
%K Delphi technique
%K DSM-5
%K gambling
%K Gambling Disorder Identification Test
%K measurement
%K psychometrics
%K screening
%D 2019
%7 08.01.2019
%9 Protocol
%J JMIR Res Protoc
%G English
%X Background: Research on the identification and treatment of problem gambling has been characterized by a wide range of outcome measures and instruments. However, a single instrument measuring gambling behavior, severity, and specific deleterious effects is lacking. Objective: This protocol describes the development of the Gambling Disorder Identification Test (G-DIT), which is a 9- to 12-item multiple-choice scale with three domains: gambling consumption, symptom severity, and negative consequences. The scale is analogous to the widely used Alcohol Use Disorders Identification Test (AUDIT) and the Drug Use Disorders Identification Test (DUDIT). Methods: The G-DIT is developed in four steps: (1) identification of items eligible for the G-DIT from a pool of existing gambling measures; (2) presentation of items proposed for evaluation by invited expert researchers through an online Delphi process and subsequent consensus meetings; (3) pilot testing of a draft of the 9- to 12-item version in a small group of participants with problem gambling behavior (n=12); and (4) evaluation of the psychometric properties of the final G-DIT measure in relation to the existing instruments and self-reported criteria of the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5), among individuals with problem gambling and nonproblematic recreational gambling behaviors (n=600). This protocol article summarizes step 1 and describes steps 2 and 3 in detail. Results: As of October 2018, steps 1-3 are complete, and step 4 is underway. Conclusions: Implementation of this online Delphi study early in the psychometric development process will contribute to the face and construct validity of the G-DIT. We believe the G-DIT will be useful as a standard outcome measure in the field of problem gambling research and serve as a problem-identification tool in clinical settings. International Registered Report Identifier (IRRID): RR1-10.2196/12006 
%M 30622097
%R 10.2196/12006
%U http://www.researchprotocols.org/2019/1/e12006/
%U https://doi.org/10.2196/12006
%U http://www.ncbi.nlm.nih.gov/pubmed/30622097