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The hospital where this study will be conducted is responsible for the one-year contingency management treatment for methamphetamine drug offenders referred from the Yunlin District Prosecutors Office. Completing the one-year treatment is prerequisite for offenders to get slow prosecutions.
It is an open-label, parallel-group trial comparing the combination of psychosocial intervention and slow prosecutions with psychosocial intervention alone in treating subjects with methamphetamine dependence
Study Hypothesis
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| TSTSU-N | Experimental | TSTSU-N stands for Treatment for Schedule Two Substance Use, No Telephone Reminding. Subjects will be referred by the Yunlin District Prosecutors Office for one-year psychosocial interventions to get slow prosecutions. After the referral, they will be randomized in a 1:1 ratio to either TSTSU-N group or TSTSU-T group. During the intervention, subjects of TSTSU-N will not receive telephone reminding before each visit. |
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| TSTSU-T | Experimental | TSTSU-T stands for Treatment for Schedule Two Substance Use, Telephone Reminding. Subjects will be referred by the Yunlin District Prosecutors Office for one-year psychosocial interventions to get slow prosecutions. After the referral, they will be randomized in a 1:1 ratio to either TSTSU-N group or TSTSU-T group. During the intervention, subjects of TSTSU-T will receive telephone reminding before each visit. |
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| OPD | Active Comparator | OPD stands for Outpatient Department. Subjects in this arm will be methamphetamine users who voluntarily visit psychiatric clinics for treatment of mental disorders in National Taiwan University Hospital, Yunlin Branch. They will be referred to this study by their treating psychiatrists. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Psychosocial intervention | Behavioral | The treatment is one-year long and composed of 3 stages of psychosocial intervention. Subjects of TSTSU arms receive urine methamphetamine examinations at each visit, while subjects in OPD arm being tested at first/last visits and during stage changes. -Stage 1, early intensive monitoring stage: The visit interval is 1 week. If the urine tests and self-report on methamphetamine use are negative for consecutive 4 visits, subjects can proceed to stage 2. (In OPD arm, the visit interval can be 2 weeks according to subjects' requirements.) -Sage 2, late intensive monitoring stage: The visit interval is 2 week. If the urine tests and self-reports are straightly negative for 4 visits, subjects can proceed to stage 3. Whenever recent methamphetamine is detected, subjects should move back to stage 1. -Stage 3, usual monitoring stage: The visit interval is 1 month until the end of treatment. Whenever recent methamphetamine is detected, subjects should move back to stage 1. |
| Measure | Description | Time Frame |
|---|---|---|
| Endpoint abstinence rate | According to the urine amphetamine/methamphetamine screen after the one-year treatment, negative result suggests successful abstinence. | At the end of one-year treatment |
| Measure | Description | Time Frame |
|---|---|---|
| Retention rate | proportion of subjects who can complete the course of one-year treatment | during the whole one-year treatment |
| Length of retention | the averaged duration of attending treatment |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Yi-Ting Lin, M.D. | Contact | +886-5-5323911 | 7120 | p98421013@ntu.edut.tw |
| Name | Affiliation | Role |
|---|---|---|
| Yi-Ting Lin, M.D. | Department of Psychiatry, National Taiwan University Hospital Yunlin Branch | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| National Taiwan University Hospital Yunlin Branch | Yunlin | Taiwan | Taiwan |
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| Telephone reminding | Behavioral | Subjects in TSTSU-T group will receive addition telephone reminding one day before each visit. Each call will be no longer than five minutes. On the telephone, brief motivation enhancement may be conducted. |
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| during the whole one-year treatment |
| The longest period of abstinence | the longest period of time with successive negative results of urine amphetamine/methamphetamine tests or negative reports of recent methamphetamine use | during the whole one-year treatment |
| ID | Term |
|---|---|
| D019969 | Amphetamine-Related Disorders |
| D019966 | Substance-Related Disorders |
| ID | Term |
|---|---|
| D064419 | Chemically-Induced Disorders |
| D001523 | Mental Disorders |
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| ID | Term |
|---|---|
| D000083626 | Psychosocial Intervention |
| ID | Term |
|---|---|
| D011613 | Psychotherapy |
| D004191 | Behavioral Disciplines and Activities |
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