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Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
Published on: August 29, 2025
Michael Scherer1, C Debra Furr-Holden, Robert B Voas
1Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
The drug use disorder (DUD) questionnaire accurately measures substance abuse and dependence, validated against biological samples. This tool offers a practical method for assessing drug use in research settings.
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