biostudies-literatureUnknown12Zhang X<h4>Background</h4>Although contingency management has shown some efficacy in substance use disorder treatment, digital contingency management (DCM) needs more evidence supporting its value in treating substance misuse.<h4>Objective</h4>This study aimed to evaluate the effectiveness of DCM in treating substance use disorder by examining 2 key outcome variables-abstinence and appointment attendance.<h4>Methods</h4>A 12-month quasi-experimental design was conducted by enrolling patients into 2 groups using an alternating assignment process: one group receiving treatment-as-usual plus DCM and the other receiving treatment as usual with no contingency management. Propensity score matching was conducted to match groups on covariates. After matching, t tests were conducted to examine the differeJMIR mental healthe73617https://www.ebi.ac.uk/biostudies/studies/S-EPMC12404579biostudies-literatureDigital Contingency Management for Substance Use Disorder Treatment: 12-Month Quasi-Experimental Design.PMC12404579Zhang XHardcastle VfalseDigital Contingency Management for Substance Use Disorder Treatment: 12-Month Quasi-Experimental Design.<h4>Background</h4>Although contingency management has shown some efficacy in substance use disorder treatment, digital contingency management (DCM) needs more evidence supporting its value in treating substance misuse.<h4>Objective</h4>This study aimed to evaluate the effectiveness of DCM in treating substance use disorder by examining 2 key outcome variables-abstinence and appointment attendance.<h4>Methods</h4>A 12-month quasi-experimental design was conducted by enrolling patients into 2 groups using an alternating assignment process: one group receiving treatment-as-usual plus DCM and the other receiving treatment as usual with no contingency management. Propensity score matching was conducted to match groups on covariates. After matching, t tests were conducted to examine the differe2025-01-01T00:00:00Z2025 Sep2026-06-03T06:06:44.35Z2026-05-29T03:06:25.602ZS-EPMC124045794089683510.2196/73617