{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Group+Commitment+Contract",
    "query": {
      "intervention": "Group Commitment Contract"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T09:41:33.779Z",
  "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": "NCT04224727",
      "title": "The Impact of Group Commitment Contracts on Smoking Cessation and Weight Loss",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Group Commitment Contract",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Individual Monetary Rewards",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Individual Commitment Contract",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Information",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "National Bureau of Economic Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3600,
      "start_date": "2023-12-18",
      "completion_date": "2025-06-19",
      "has_results": false,
      "last_update_posted_date": "2024-04-16",
      "last_synced_at": "2026-09-02T09:41:33.779Z",
      "location_count": 1,
      "location_summary": "Evanston, Illinois",
      "locations": [
        {
          "city": "Evanston",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04224727"
    },
    {
      "nct_id": "NCT05736484",
      "title": "Randomized Clinical Trial to Improve Mobility After Hospitalization",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension",
        "Diabetes",
        "Heart Failure",
        "Ambulatory Difficulty",
        "Mobility Limitation"
      ],
      "interventions": [
        {
          "name": "Social Support Gamification",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 350,
      "start_date": "2023-09-19",
      "completion_date": "2026-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-06",
      "last_synced_at": "2026-09-02T09:41:33.779Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05736484"
    },
    {
      "nct_id": "NCT06964633",
      "title": "The Ku Ola Project: Enhancing Health Promotion Among Native Hawaiian Men.",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Health Promotion",
        "Health"
      ],
      "interventions": [
        {
          "name": "Kūkākūkā Discussion Sessions",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Hawaii",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 600,
      "start_date": "2026-05-01",
      "completion_date": "2028-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-31",
      "last_synced_at": "2026-09-02T09:41:33.779Z",
      "location_count": 1,
      "location_summary": "Honolulu, Hawaii",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06964633"
    },
    {
      "nct_id": "NCT02596061",
      "title": "In It To Quit: Commitment Contracts for Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Deposit Contract",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Incentives",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Community Health Center, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 311,
      "start_date": "2015-11",
      "completion_date": "2017-12",
      "has_results": false,
      "last_update_posted_date": "2018-01-26",
      "last_synced_at": "2026-09-02T09:41:33.779Z",
      "location_count": 1,
      "location_summary": "Middletown, Connecticut",
      "locations": [
        {
          "city": "Middletown",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02596061"
    },
    {
      "nct_id": "NCT04146025",
      "title": "Nurtured in Nature",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postpartum Depression",
        "Pregnancy Related",
        "Environmental Exposure"
      ],
      "interventions": [
        {
          "name": "Nature Coach Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 36,
      "start_date": "2019-09-12",
      "completion_date": "2020-03-27",
      "has_results": false,
      "last_update_posted_date": "2020-11-24",
      "last_synced_at": "2026-09-02T09:41:33.779Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04146025"
    },
    {
      "nct_id": "NCT04587609",
      "title": "Reducing Cell Phone Use While Driving Among High Risk UBI Auto Policy Holders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Distracted Driving",
        "Driving Impaired"
      ],
      "interventions": [
        {
          "name": "Free Phone Mounts",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Commitment Contract",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Personalized Habit Tips",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Social Gamification Feedback",
          "type": "BEHAVIORAL"
        },
        {
          "name": "\"Contest\" 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": 1668,
      "start_date": "2021-03-01",
      "completion_date": "2021-06-30",
      "has_results": false,
      "last_update_posted_date": "2021-07-02",
      "last_synced_at": "2026-09-02T09:41:33.779Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04587609"
    }
  ]
}