{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Prize+Draw+Incentive",
    "query": {
      "intervention": "Prize Draw Incentive"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 12,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Prize+Draw+Incentive&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T01:18:26.901Z",
  "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": "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      "overall_status": "WITHDRAWN",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": "2026-09-03T01:18:26.901Z",
      "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": "NCT06532370",
      "title": "Implementing a Contingency Management Program Addressing Methamphetamine Use For and With the People of Hawaii",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Contingency Managment",
        "Methamphetamine Use Disorder"
      ],
      "interventions": [
        {
          "name": "Contingency Managment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Queen's Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2024-10-10",
      "completion_date": "2026-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-31",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 1,
      "location_summary": "Honolulu, Hawaii",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06532370"
    },
    {
      "nct_id": "NCT03942770",
      "title": "Remote Alcohol Monitoring to Facilitate Abstinence From Alcohol: Exp 2",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Contingency management",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mikhail N Koffarnus",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 91,
      "start_date": "2019-07-15",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-06",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 2,
      "location_summary": "Lexington, Kentucky • Roanoke, Virginia",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03942770"
    },
    {
      "nct_id": "NCT04029883",
      "title": "Behavioral Economics to Improve Antihypertensive Therapy Adherence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension",
        "Medication Adherence"
      ],
      "interventions": [
        {
          "name": "Text Message",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Economic Incentive",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Cedars-Sinai Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2022-04-19",
      "completion_date": "2024-07-31",
      "has_results": true,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04029883"
    },
    {
      "nct_id": "NCT01278654",
      "title": "Lottery Incentives for Moving",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Sedentary Lifestyle"
      ],
      "interventions": [
        {
          "name": "Incentive to exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Harvard University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 212,
      "start_date": "2011-03",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2012-03-19",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01278654"
    },
    {
      "nct_id": "NCT05585203",
      "title": "Contingency Management for Recovery Oriented Activities at Recovery Houses",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Use Disorders"
      ],
      "interventions": [
        {
          "name": "Contingency management",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Wayne State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2022-10-01",
      "completion_date": "2024-09-20",
      "has_results": false,
      "last_update_posted_date": "2024-03-08",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05585203"
    },
    {
      "nct_id": "NCT04884087",
      "title": "EMA of Substance Use in Homeless Youth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Use"
      ],
      "interventions": [
        {
          "name": "Ecological Momentary Assessment (EMA; Metricwire) Prompts 3x/day",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Ecological Momentary Assessment (EMA; Metricwire) Prompts 6x/day",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Incentive Structure - fixed",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Incentive Structure - prize based",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Nationwide Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "24 Years",
        "sex": "ALL",
        "summary": "18 Years to 24 Years"
      },
      "enrollment_count": 40,
      "start_date": "2021-02-24",
      "completion_date": "2021-06-30",
      "has_results": false,
      "last_update_posted_date": "2023-03-17",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04884087"
    },
    {
      "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": "2026-09-03T01:18:26.901Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03799341"
    },
    {
      "nct_id": "NCT03144336",
      "title": "Using Mobile Technology and Incentives With Men Who Have Sex With Men and Transgender Women for HIV Prevention",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV Infections",
        "HIV"
      ],
      "interventions": [
        {
          "name": "Information provision",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weekly quizzes",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Rewards for testing HIV-negative",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "RAND",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 217,
      "start_date": "2017-05-24",
      "completion_date": "2019-08-23",
      "has_results": false,
      "last_update_posted_date": "2019-09-10",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03144336"
    },
    {
      "nct_id": "NCT00891111",
      "title": "Incentives for Preventative Health Care: Increasing Completion of Health Risk Assessments",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prevention"
      ],
      "interventions": [
        {
          "name": "Direct Payment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Regret Lottery",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Carnegie Mellon University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 634,
      "start_date": "2009-05",
      "completion_date": "2009-06",
      "has_results": false,
      "last_update_posted_date": "2018-02-05",
      "last_synced_at": "2026-09-03T01:18:26.901Z",
      "location_count": 8,
      "location_summary": "Shelton, Connecticut • Pensacola, Florida • Tampa, Florida + 5 more",
      "locations": [
        {
          "city": "Shelton",
          "state": "Connecticut"
        },
        {
          "city": "Pensacola",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Tinley Park",
          "state": "Illinois"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00891111"
    }
  ]
}