{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Voucher-based+incentives",
    "query": {
      "intervention": "Voucher-based incentives"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 13,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Voucher-based+incentives&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T13:15:17.406Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01142986",
      "title": "Evaluating Three Methods for Helping Syringe Exchangers Begin Methadone Maintenance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Abuse Disorder"
      ],
      "interventions": [
        {
          "name": "Low intensity care",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Voucher reinforcement",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 223,
      "start_date": "2010-07",
      "completion_date": "2015-10",
      "has_results": false,
      "last_update_posted_date": "2018-07-30",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01142986"
    },
    {
      "nct_id": "NCT02558660",
      "title": "Evaluating Use of a Farmers Market Incentive Program Among Low-Income Health Center Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Insecurity",
        "Non-use of Existing State-wide SNAP Incentive Program"
      ],
      "interventions": [
        {
          "name": "Education",
          "type": "BEHAVIORAL"
        },
        {
          "name": "voucher",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 177,
      "start_date": "2014-08",
      "completion_date": "2015-10",
      "has_results": false,
      "last_update_posted_date": "2015-12-28",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "Ypsilanti, Michigan",
      "locations": [
        {
          "city": "Ypsilanti",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02558660"
    },
    {
      "nct_id": "NCT00718835",
      "title": "Incentive-based Smoking Cessation for Methadone Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cigarette Smoking Among Patients Currently Receiving Methadone or Buprenorphine Treatment for Opioid Dependence"
      ],
      "interventions": [
        {
          "name": "incentive-based contingency management",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Vermont Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 170,
      "start_date": "2007-06",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2014-02-21",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00718835"
    },
    {
      "nct_id": "NCT00607269",
      "title": "Voucher-Based Incentives in a Prevention Setting",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Substance-related Disorders"
      ],
      "interventions": [
        {
          "name": "Voucher-Based Reinforcement Therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Friends Research Institute, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 131,
      "start_date": "2005-04",
      "completion_date": "2008-02",
      "has_results": true,
      "last_update_posted_date": "2013-08-01",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00607269"
    },
    {
      "nct_id": "NCT03799341",
      "title": "Neurocognitive Factors in Substance Use Treatment Response: The Ways of Rewarding Abstinence Project",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cocaine Use Disorder"
      ],
      "interventions": [
        {
          "name": "Prize-Based Contingency Management",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Treatment As Usual Outpatient Substance Use Treatment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 63,
      "start_date": "2019-11-13",
      "completion_date": "2024-04-12",
      "has_results": true,
      "last_update_posted_date": "2025-09-30",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03799341"
    },
    {
      "nct_id": "NCT07179614",
      "title": "Kentucky Women's Justice Community Overdose Innovation Network - Phase II",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overdose Risk",
        "Opioid Use Disorder",
        "Stimulant Use Disorders"
      ],
      "interventions": [
        {
          "name": "Overdose Prevention Intervention Package (OPIP)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Michele Staton",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 300,
      "start_date": "2026-06-23",
      "completion_date": "2030-10-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-28",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 2,
      "location_summary": "Harlan, Kentucky • Hyden, Kentucky",
      "locations": [
        {
          "city": "Harlan",
          "state": "Kentucky"
        },
        {
          "city": "Hyden",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07179614"
    },
    {
      "nct_id": "NCT04104022",
      "title": "Prolonged Exposure Therapy for PTSD and Opioid Use Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Post Traumatic Stress Disorder",
        "Opioid-use Disorder"
      ],
      "interventions": [
        {
          "name": "Prolonged Exposure Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Attendance-based monetary incentives",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 82,
      "start_date": "2019-11-08",
      "completion_date": "2023-07-31",
      "has_results": true,
      "last_update_posted_date": "2026-06-11",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04104022"
    },
    {
      "nct_id": "NCT04561765",
      "title": "Innovation in the Treatment of Persistent Pain in Adults With NF1: Implementation of the iCanCope Mobile Application- Clinical Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Neurofibromatosis 1",
        "Chronic Pain"
      ],
      "interventions": [
        {
          "name": "iCanCope",
          "type": "DEVICE"
        },
        {
          "name": "iCanCope+Contingency Management",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "72 Years",
        "sex": "ALL",
        "summary": "18 Years to 72 Years"
      },
      "enrollment_count": 122,
      "start_date": "2021-03-01",
      "completion_date": "2022-09-06",
      "has_results": true,
      "last_update_posted_date": "2025-03-30",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04561765"
    },
    {
      "nct_id": "NCT01277367",
      "title": "Vitality Health Incentives for Physical Activity",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Discovery Vitality base program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Communication",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Charitable Incentive",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Prize Draw Incentive",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Direct Payment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Free Choice",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2010-05",
      "completion_date": "2013-02",
      "has_results": false,
      "last_update_posted_date": "2016-08-19",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 2,
      "location_summary": "Philadelphia, Pennsylvania • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01277367"
    },
    {
      "nct_id": "NCT01693978",
      "title": "Contingency Outcomes in Prolonged Exposure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Posttraumatic Stress Disorder",
        "Substance Use Disorder"
      ],
      "interventions": [
        {
          "name": "Prolonged Exposure Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Voucher-Based Reinforcement",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 126,
      "start_date": "2012-09",
      "completion_date": "2015-09",
      "has_results": false,
      "last_update_posted_date": "2016-08-31",
      "last_synced_at": "2026-09-04T13:15:17.406Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01693978"
    }
  ]
}