Cannabis Use Disorder Identification Test - Revised - CUDIT-R

Technical Manual

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond

Created: January 27, 2018

Last Modified: January 24, 2023 by K. Borchert (katjab@millisecond.com), Millisecond

Script Copyright © Millisecond Software, LLC

Background

This script implements a computerized version of the Cannabis Use Disorder Identification Test - Revised (CUDIT-R)

References

Adamson SJ, Kay-Lambkin FJ, Baker AL, Lewin TJ, Thornton L, Kelly BJ, and Sellman JD. (2010). An Improved Brief Measure of Cannabis Misuse: The Cannabis Use Disorders Identification Test – Revised (CUDIT-R). Drug and Alcohol Dependence 110:137-143.

Duration

0.5 minutes

Overview

8 5-point Likert questions regarding cannabis use over the last 6 months, self-report

The first question asks about cannabis use during the last 6 months. If no cannabis use is reported for this
time frame, the remaining questions are skipped.

Instructions

see section SURVEYPAGES (change/edit captions under each surveyPage)

Summary Data

File Name: cudit_r_summary.iqdat' (Inquisit Lab: one data file per participant)

Data Fields

NameDescription
inquisit.version Inquisit version number
computer.platform Device platform: win | mac |ios | android
startDate Date the session was run
startTime Time the session was run
subjectId Participant ID
groupId Group number
sessionId Session number
elapsedTime Session duration in ms
completed 0 = Test was not completed
1 = Test was completed
cuditRScore Sum of all individual scores (range: 0-32)
scores >= 8 indicates hazardous cannabis use,
scores >= 12 indicate possible cannabis use disorder for which further use might be required
radioButtons.cannabisuse.response (first question): 1 = yes; 0 = no
+ remaining 8 questions

Raw Data

File Name: cudit_r.iqdat

Data Fields

NameDescription
date Date the session was run
time Time the session was run
subject, group, session With the current subject/groupnumber/session id
build Inquisit version number
q*_response Response given (in assigned values - depends on question)
cannabis use: 0 = no; 1 = yes
q1-q7: 0 (never) - 4 (almost daily)
q8: 0 (never), 2, 4 (during the last 6 months)
No reversed scored questions
q*_latency How much time (in ms) the participant spent on the surveyPage with this particular question (the last time this particular surveyPage was visited)