{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Financial+Incentive%3A+Middle",
    "query": {
      "intervention": "Financial Incentive: Middle"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T13:28:35.058Z",
  "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": "NCT04304872",
      "title": "Improving Physical Activity and Cardiac Rehabilitation Attendance Using Technology and Behavioral Economics",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Gamification",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Loss-Framed Financial Incentives",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2023-10-31",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2023-10-13",
      "last_synced_at": "2026-09-02T13:28:35.058Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04304872"
    },
    {
      "nct_id": "NCT04747327",
      "title": "Incentives & Motivation for Behavior Change:",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Behavior",
        "Intention"
      ],
      "interventions": [
        {
          "name": "mandate public",
          "type": "BEHAVIORAL"
        },
        {
          "name": "employer mandate",
          "type": "BEHAVIORAL"
        },
        {
          "name": "incentive reward",
          "type": "BEHAVIORAL"
        },
        {
          "name": "penalty",
          "type": "BEHAVIORAL"
        },
        {
          "name": "incentive lottery small",
          "type": "BEHAVIORAL"
        },
        {
          "name": "incentive lottery medium",
          "type": "BEHAVIORAL"
        },
        {
          "name": "incentive lottery large",
          "type": "BEHAVIORAL"
        },
        {
          "name": "cash small",
          "type": "BEHAVIORAL"
        },
        {
          "name": "cash medium",
          "type": "BEHAVIORAL"
        },
        {
          "name": "cash large",
          "type": "BEHAVIORAL"
        },
        {
          "name": "invitation for exercise financial incentive study",
          "type": "BEHAVIORAL"
        },
        {
          "name": "invitation for exercise social incentive study",
          "type": "BEHAVIORAL"
        },
        {
          "name": "invitation for sleep social incentive study",
          "type": "BEHAVIORAL"
        },
        {
          "name": "invitation for sleep financial incentive",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4000,
      "start_date": "2021-02-07",
      "completion_date": "2023-12-30",
      "has_results": false,
      "last_update_posted_date": "2024-02-15",
      "last_synced_at": "2026-09-02T13:28:35.058Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04747327"
    },
    {
      "nct_id": "NCT02976389",
      "title": "Southern California Nutrition Incentive Program",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Insecurity"
      ],
      "interventions": [
        {
          "name": "Financial Incentive: High",
          "type": "OTHER"
        },
        {
          "name": "Financial Incentive: Middle",
          "type": "OTHER"
        },
        {
          "name": "Financial Incentive: Low",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3780,
      "start_date": "2017-01-01",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-05",
      "last_synced_at": "2026-09-02T13:28:35.058Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02976389"
    },
    {
      "nct_id": "NCT03911141",
      "title": "Behavioral Economic Approaches to Increase Physical Activity Among Patients With Elevated Risk for Cardiovascular Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atherosclerotic Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "Gamification",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Financial",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1062,
      "start_date": "2019-04-12",
      "completion_date": "2024-01-27",
      "has_results": true,
      "last_update_posted_date": "2025-01-27",
      "last_synced_at": "2026-09-02T13:28:35.058Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03911141"
    }
  ]
}