{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=13",
    "query": {
      "intervention": "No intervention (observational study)",
      "page": 13
    },
    "page_size": 10
  },
  "pagination": {
    "page": 13,
    "page_size": 10,
    "total_count": 917,
    "total_pages": 92,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=14&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=12&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-19T20:45:22.773Z",
  "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": "NCT03021798",
      "title": "An OBServational Clinical Trial (SARA-OBS) in Sarcopenia and Sarcopenic Obesity in Patients Aged 65 Years and Over",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sarcopenia",
        "Gait Disorders in Old Age",
        "Muscle Weakness"
      ],
      "interventions": [
        {
          "name": "No Drug and no aspecific intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Biophytis",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "65 Years to 95 Years"
      },
      "enrollment_count": 218,
      "start_date": "2017-02-08",
      "completion_date": "2020-06-30",
      "has_results": false,
      "last_update_posted_date": "2020-07-13",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 3,
      "location_summary": "Gainesville, Florida • Boston, Massachusetts • New York, New York",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03021798"
    },
    {
      "nct_id": "NCT02821845",
      "title": "Eccentric Motor Control After SCI",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Spinal Cord Injury"
      ],
      "interventions": [
        {
          "name": "Untrained and Trained SCI Hip or Knee",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 49,
      "start_date": "2015-06",
      "completion_date": "2019-10",
      "has_results": false,
      "last_update_posted_date": "2021-03-22",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02821845"
    },
    {
      "nct_id": "NCT04212143",
      "title": "Central Blood Pressure and Pulse Wave Velocity in Kidney Transplant Recipients",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "there is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's National Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "3 Years to 21 Years"
      },
      "enrollment_count": 150,
      "start_date": "2021-07-01",
      "completion_date": "2026-07-01",
      "has_results": false,
      "last_update_posted_date": "2025-07-03",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04212143"
    },
    {
      "nct_id": "NCT01109459",
      "title": "Multimodal Physician Intervention to Detect Amblyopia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Amblyopia",
        "Strabismus"
      ],
      "interventions": [
        {
          "name": "Pediatric blood pressure screening",
          "type": "OTHER"
        },
        {
          "name": "Pediatric vision screening",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 136,
      "start_date": "2004-09",
      "completion_date": "2008-10",
      "has_results": false,
      "last_update_posted_date": "2010-04-23",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01109459"
    },
    {
      "nct_id": "NCT04557059",
      "title": "A Study of Adding Apalutamide to Radiotherapy and LHRH Agonist in High-Risk Patients With Hormone-Sensitive Prostate Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Prostatic Neoplasms"
      ],
      "interventions": [
        {
          "name": "Radiotherapy",
          "type": "RADIATION"
        },
        {
          "name": "LHRHa",
          "type": "DRUG"
        },
        {
          "name": "Apalutamide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "DRUG"
      ],
      "sponsor": "Janssen Pharmaceutica N.V., Belgium",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 691,
      "start_date": "2020-11-12",
      "completion_date": "2031-09-15",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 13,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Lakewood, Colorado + 10 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Lakewood",
          "state": "Colorado"
        },
        {
          "city": "Hialeah",
          "state": "Florida"
        },
        {
          "city": "Jeffersonville",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04557059"
    },
    {
      "nct_id": "NCT02697266",
      "title": "The Effects of Night Call on Intellectual Performance",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep Deprivation"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Haleh Saadat",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 21,
      "start_date": "2014-03",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-09-09",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02697266"
    },
    {
      "nct_id": "NCT04113551",
      "title": "A Study of Label Compliance for Attention Deficit/Hyperactivity Disorder (ADHD) Medications in Japan",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Attention Deficit Disorder With Hyperactivity"
      ],
      "interventions": [
        {
          "name": "MPH (Concerta)",
          "type": "DRUG"
        },
        {
          "name": "MPH (Ritalin)",
          "type": "DRUG"
        },
        {
          "name": "Atomoxetine (ATO)",
          "type": "DRUG"
        },
        {
          "name": "Guanfacine (GFC)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 17418,
      "start_date": "2019-10-01",
      "completion_date": "2020-01-10",
      "has_results": false,
      "last_update_posted_date": "2025-04-27",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 1,
      "location_summary": "Titusville, New Jersey",
      "locations": [
        {
          "city": "Titusville",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04113551"
    },
    {
      "nct_id": "NCT03238157",
      "title": "Steroids for Early Treatment of Radiation Retinopathy",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Radiation Retinopathy"
      ],
      "interventions": [
        {
          "name": "Fluocinolone Acetonide (FA) implant",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 0,
      "start_date": "2022-02-01",
      "completion_date": "2022-09-01",
      "has_results": false,
      "last_update_posted_date": "2021-08-04",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03238157"
    },
    {
      "nct_id": "NCT07046845",
      "title": "Perelel Prenatal Supplements vs. Generic Prenatal Supplements and Health of Mother and Baby (SUPPORT)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Perelel Prenatal Vitamin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Generic Prenatal Vitamin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "14 Years and older · Female only"
      },
      "enrollment_count": 600,
      "start_date": "2026-01-07",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07046845"
    },
    {
      "nct_id": "NCT07775872",
      "title": "Prospective Natural History Study of POLG Disease",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "PolG, Primary Mitochondrial Myopathy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "The POLG Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 300,
      "start_date": "2026-06-17",
      "completion_date": "2031-06-17",
      "has_results": false,
      "last_update_posted_date": "2026-09-15",
      "last_synced_at": "2026-10-19T20:45:22.773Z",
      "location_count": 7,
      "location_summary": "San Diego, California • Aurora, Colorado • New York, New York + 4 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Akron",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07775872"
    }
  ]
}