{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=17",
    "query": {
      "intervention": "No intervention (observational study)",
      "page": 17
    },
    "page_size": 10
  },
  "pagination": {
    "page": 17,
    "page_size": 10,
    "total_count": 918,
    "total_pages": 92,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=18&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=16&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T22:49:15.573Z",
  "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": "NCT00297414",
      "title": "An Observational Study for Analysis of Mortality in Participants Who Participated in Previous 3 Studies of Galantamine",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Johnson & Johnson Pharmaceutical Research & Development, L.L.C.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1083,
      "start_date": "2004-06",
      "completion_date": "2005-01",
      "has_results": false,
      "last_update_posted_date": "2012-04-12",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 50,
      "location_summary": "Tucson, Arizona • Laguna Woods, California • Northridge, California + 47 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Laguna Woods",
          "state": "California"
        },
        {
          "city": "Northridge",
          "state": "California"
        },
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "Paramount",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00297414"
    },
    {
      "nct_id": "NCT03784976",
      "title": "Iyengar Yoga Therapy for Dysmenorrhea and Endometriosis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Secondary Dysmenorrhea",
        "Dysmenorrhea",
        "Dysmenorrhea Secondary",
        "Polycystic Ovary Syndrome",
        "Endometriosis",
        "Fibroid",
        "Menstrual Pain",
        "Menstrual Disorder",
        "Menstrual Discomfort"
      ],
      "interventions": [
        {
          "name": "Iyengar Yoga Therapy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "12 Years to 65 Years · Female only"
      },
      "enrollment_count": 90,
      "start_date": "2018-07-03",
      "completion_date": "2021-07-02",
      "has_results": false,
      "last_update_posted_date": "2018-12-24",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03784976"
    },
    {
      "nct_id": "NCT05558371",
      "title": "International CDKL5 Clinical Research Network",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "CDKL5",
        "CDKL5 Deficiency Disorder",
        "CDD"
      ],
      "interventions": [
        {
          "name": "No intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "1 Month to 100 Years"
      },
      "enrollment_count": 1000,
      "start_date": "2021-02-15",
      "completion_date": "2027-02-15",
      "has_results": false,
      "last_update_posted_date": "2023-12-06",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 8,
      "location_summary": "Los Angeles, California • Aurora, Colorado • Boston, Massachusetts + 5 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05558371"
    },
    {
      "nct_id": "NCT06034509",
      "title": "Cognitive and Vascular Functioning Following TBI",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Traumatic Brain Injury",
        "Cognitive Decline",
        "Vascular Dementia"
      ],
      "interventions": [
        {
          "name": "No intervention. This is an observational study.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Walter Reed National Military Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "74 Years",
        "sex": "ALL",
        "summary": "18 Years to 74 Years"
      },
      "enrollment_count": 300,
      "start_date": "2023-11-27",
      "completion_date": "2027-05",
      "has_results": false,
      "last_update_posted_date": "2025-09-26",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06034509"
    },
    {
      "nct_id": "NCT03869918",
      "title": "Physical Exercise and Bladder Training Program for Urinary Incontinence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "Exercise Program",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "60 Years and older · Female only"
      },
      "enrollment_count": 37,
      "start_date": "2014-03-30",
      "completion_date": "2018-09-01",
      "has_results": false,
      "last_update_posted_date": "2020-02-05",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03869918"
    },
    {
      "nct_id": "NCT06972862",
      "title": "Bone and Body Composition Adaptations to Physical Training",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Exercise",
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Osteogenic Index Optimized Exercise Training Program",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 206,
      "start_date": "2022-08-29",
      "completion_date": "2025-04-27",
      "has_results": false,
      "last_update_posted_date": "2026-08-17",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 2,
      "location_summary": "Lawrence, Kansas • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Lawrence",
          "state": "Kansas"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06972862"
    },
    {
      "nct_id": "NCT03056794",
      "title": "Natural History and Advanced Genetic Study of Pyruvate Dehydrogenase Complex Deficiencies",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pyruvate Dehydrogenase Complex Deficiency Disease"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 150,
      "start_date": "2015-09",
      "completion_date": "2030-12",
      "has_results": false,
      "last_update_posted_date": "2026-10-05",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03056794"
    },
    {
      "nct_id": "NCT05277363",
      "title": "A Study of the Natural Course of SURF1 Deficiency",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Leigh Syndrome"
      ],
      "interventions": [
        {
          "name": "None (Observational study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Taysha Gene Therapies, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "Up to 18 Years"
      },
      "enrollment_count": 0,
      "start_date": "2022-05-04",
      "completion_date": "2022-05-04",
      "has_results": false,
      "last_update_posted_date": "2022-05-20",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05277363"
    },
    {
      "nct_id": "NCT06988176",
      "title": "Frailty and Muscle Strength Tests in Older Adults Undergoing Major Surgery",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Frailty",
        "Sarcopenia",
        "Sarcopenia in Elderly",
        "Muscle Strength",
        "Post Operative Complications",
        "Nutrition Assessment",
        "Risk Assessment",
        "Elderly (People Aged 65 or More)",
        "Hand Strength"
      ],
      "interventions": [
        {
          "name": "Frailty assessment, nutrition assessment, cognition assessment, muscle strength testing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-06-19",
      "completion_date": "2026-08-04",
      "has_results": false,
      "last_update_posted_date": "2026-08-17",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06988176"
    },
    {
      "nct_id": "NCT06438640",
      "title": "Evaluating a Strategy to Improve Pre-Anesthesia Care Discussions (My Anesthesia Choice-Hip Fracture)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hip Fractures",
        "Femoral Neck Fractures",
        "Intertrochanteric Fractures",
        "Subtrochanteric Fractures"
      ],
      "interventions": [
        {
          "name": "My Anesthesia Choice-HF Model",
          "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": 1881,
      "start_date": "2024-08-15",
      "completion_date": "2028-06-15",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-10-20T22:49:15.573Z",
      "location_count": 6,
      "location_summary": "Gainesville, Florida • Detroit, Michigan • Lebanon, New Hampshire + 3 more",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06438640"
    }
  ]
}