{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Group-based+payout",
    "query": {
      "intervention": "Group-based payout"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T02:08:38.245Z",
  "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": "NCT01208350",
      "title": "Testing Strategies to Encourage Weight Loss in an Employer Setting",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Group-based payout",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Individual payout",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 105,
      "start_date": "2011-03",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2014-09-08",
      "last_synced_at": "2026-09-11T02:08:38.245Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01208350"
    },
    {
      "nct_id": "NCT01303081",
      "title": "Pilot Randomized Control Trial of Financial Incentives for Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "Individual Rewards",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Fixed Deposits",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Chosen Deposits",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Competitive Deposits (Pari-Mutuel)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "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": 63,
      "start_date": "2011-06",
      "completion_date": "2012-06",
      "has_results": false,
      "last_update_posted_date": "2012-08-02",
      "last_synced_at": "2026-09-11T02:08:38.245Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01303081"
    },
    {
      "nct_id": "NCT01526265",
      "title": "Way to Quit - Comparative Efficacy, Acceptance and Effectiveness of Health Incentive Structures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "Usual Care",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Individual Rewards",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Fixed Deposits",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Competitive Deposits (Pari-Mutuel)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Collaborative Rewards",
          "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": 2185,
      "start_date": "2012-02",
      "completion_date": "2015-11",
      "has_results": false,
      "last_update_posted_date": "2016-05-12",
      "last_synced_at": "2026-09-11T02:08:38.245Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01526265"
    },
    {
      "nct_id": "NCT03576326",
      "title": "BEhavioral EConomics for Oral Health iNnovation Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Toothbrushing",
        "Dental Plaque",
        "Parent-Child Relations",
        "Oral Hygiene",
        "Dental Caries"
      ],
      "interventions": [
        {
          "name": "Drawing Incentive",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "47 Months",
        "sex": "ALL",
        "summary": "6 Months to 47 Months"
      },
      "enrollment_count": 244,
      "start_date": "2018-05-09",
      "completion_date": "2021-06-30",
      "has_results": true,
      "last_update_posted_date": "2025-09-19",
      "last_synced_at": "2026-09-11T02:08:38.245Z",
      "location_count": 1,
      "location_summary": "Santa Monica, California",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03576326"
    },
    {
      "nct_id": "NCT03862443",
      "title": "BEhavioral EConomics for Oral Health iNnovation Pilot Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Toothbrushing",
        "Dental Plaque",
        "Parent-Child Relations",
        "Oral Hygiene",
        "Dental Caries"
      ],
      "interventions": [
        {
          "name": "Fixed Incentive",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Drawing Incentive",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "42 Months",
        "sex": "ALL",
        "summary": "6 Months to 42 Months"
      },
      "enrollment_count": 36,
      "start_date": "2017-05-10",
      "completion_date": "2018-03-19",
      "has_results": false,
      "last_update_posted_date": "2019-03-05",
      "last_synced_at": "2026-09-11T02:08:38.245Z",
      "location_count": 1,
      "location_summary": "Santa Monica, California",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03862443"
    }
  ]
}