{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational-control&page=5",
    "query": {
      "intervention": "Observational-control",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 644,
    "total_pages": 65,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational-control&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational-control&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-26T01:42:26.689Z",
  "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": "NCT00851058",
      "title": "Reducing Driving Offenses of Adolescent Drinkers",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Alcohol Consumption"
      ],
      "interventions": [
        {
          "name": "Brief group counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Community Counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Prototypic community service",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rhode Island Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "16 Years to 20 Years"
      },
      "enrollment_count": 786,
      "start_date": "2007-05",
      "completion_date": "2012-04",
      "has_results": false,
      "last_update_posted_date": "2011-02-25",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00851058"
    },
    {
      "nct_id": "NCT04349514",
      "title": "A Natural History Study to TRACK Brain and Spinal Cord Changes in Individuals with Friedreich Ataxia (TRACK-FA)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Friedreich Ataxia"
      ],
      "interventions": [
        {
          "name": "Natural history",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Monash University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "5 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2021-02-10",
      "completion_date": "2025-10",
      "has_results": false,
      "last_update_posted_date": "2024-11-27",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 3,
      "location_summary": "Gainesville, Florida • Minneapolis, Minnesota • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04349514"
    },
    {
      "nct_id": "NCT03189758",
      "title": "Dietary Sodium (DS) Intervention to Reduce Volume Overload and Tissue Sodium in Magnetic Resonance Imaging (MRI) for Hemodialysis (HD) Patients",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Failure, Chronic",
        "Dietary Modification"
      ],
      "interventions": [
        {
          "name": "Observational Control Diet",
          "type": "OTHER"
        },
        {
          "name": "Controlled Dietary Sodium Restriction",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2017-06-19",
      "completion_date": "2021-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-08-03",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03189758"
    },
    {
      "nct_id": "NCT04839718",
      "title": "Evaluation of the Achieving Depression and Anxiety Patient Centered Treatment (ADAPT) Program",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Depression",
        "Anxiety"
      ],
      "interventions": [
        {
          "name": "ADAPT",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2019-04-01",
      "completion_date": "2022-12-31",
      "has_results": false,
      "last_update_posted_date": "2023-03-02",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 1,
      "location_summary": "Oakland, California",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04839718"
    },
    {
      "nct_id": "NCT02864147",
      "title": "Treatment of High-Grade Pre-Neoplastic Cervical Lesions (CIN 2/3)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cervical Intraepithelial Neoplasia",
        "Cervical Dysplasia"
      ],
      "interventions": [
        {
          "name": "9-valent HPV vaccine",
          "type": "DRUG"
        },
        {
          "name": "Imiquimod",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Yale University",
      "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": 134,
      "start_date": "2016-07",
      "completion_date": "2022-11-22",
      "has_results": true,
      "last_update_posted_date": "2024-05-02",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02864147"
    },
    {
      "nct_id": "NCT03711149",
      "title": "Activity Monitor Feedback and Interactive Tours to Improve Postoperative Ambulation",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Surgery"
      ],
      "interventions": [
        {
          "name": "Activity monitor feedback loop",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 192,
      "start_date": "2018-12-05",
      "completion_date": "2019-12-30",
      "has_results": false,
      "last_update_posted_date": "2019-03-29",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03711149"
    },
    {
      "nct_id": "NCT04862221",
      "title": "TReatment for ImmUne Mediated PathopHysiology",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Acute Liver Failure",
        "Fulminant Hepatic Failure",
        "Hepatic Encephalopathy",
        "Acute Liver Injury",
        "Immune Dysregulation"
      ],
      "interventions": [
        {
          "name": "High-dose methylprednisolone",
          "type": "DRUG"
        },
        {
          "name": "Equine anti-thymocyte globulin",
          "type": "DRUG"
        },
        {
          "name": "Prednisolone",
          "type": "DRUG"
        },
        {
          "name": "Placebo for prednisolone",
          "type": "DRUG"
        },
        {
          "name": "Placebo for infusions",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "Methylprednisolone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "1 Year to 18 Years"
      },
      "enrollment_count": 44,
      "start_date": "2022-02-09",
      "completion_date": "2027-02",
      "has_results": false,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 17,
      "location_summary": "Los Angeles, California • Palo Alto, California • San Diego, California + 14 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04862221"
    },
    {
      "nct_id": "NCT03595878",
      "title": "Trial of Parotid Sparing Whole Brain Radiation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Xerostomia"
      ],
      "interventions": [
        {
          "name": "Parotid sparing WBRT",
          "type": "RADIATION"
        },
        {
          "name": "Standard WBRT",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "UNC Lineberger Comprehensive Cancer 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": "2018-05-09",
      "completion_date": "2022-03-16",
      "has_results": true,
      "last_update_posted_date": "2025-04-25",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 3,
      "location_summary": "Ann Arbor, Michigan • Chapel Hill, North Carolina • Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03595878"
    },
    {
      "nct_id": "NCT02825485",
      "title": "Minimizing the Utilization of Voiding Cystourethrography for Patients With Antenatal Hydronephrosis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Antenatal Hydronephrosis",
        "Post-natal Hydronephrosis"
      ],
      "interventions": [
        {
          "name": "Voiding cystourethrogram",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Months",
        "maximum_age": "5 Years",
        "sex": "ALL",
        "summary": "0 Months to 5 Years"
      },
      "enrollment_count": 24,
      "start_date": "2016-07-27",
      "completion_date": "2019-05-24",
      "has_results": false,
      "last_update_posted_date": "2021-09-30",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02825485"
    },
    {
      "nct_id": "NCT01905618",
      "title": "Tobacco Treatment Medical Education in 10 Medical Schools",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Disorder",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Web-based curriculum on tobacco dependence treatment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Tobacco Counseling Role Play",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Preceptor Training and Teaching Medical Students",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Booster Session",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Massachusetts, Worcester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2009-07",
      "completion_date": "2014-05",
      "has_results": false,
      "last_update_posted_date": "2015-06-03",
      "last_synced_at": "2026-10-26T01:42:26.689Z",
      "location_count": 13,
      "location_summary": "Birmingham, Alabama • Stanford, California • Washington D.C., District of Columbia + 10 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01905618"
    }
  ]
}