{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Longitudinal&page=40",
    "query": {
      "intervention": "Longitudinal",
      "page": 40
    },
    "page_size": 10
  },
  "pagination": {
    "page": 40,
    "page_size": 10,
    "total_count": 1258,
    "total_pages": 126,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Longitudinal&page=41&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Longitudinal&page=39&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-03T06:08:44.550Z",
  "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": "NCT07219693",
      "title": "QuantaFlo HD Clinical Validation Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "To Assess Cardiovascular Function"
      ],
      "interventions": [
        {
          "name": "QuantaFlo HD",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Semler Scientific",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 600,
      "start_date": "2025-08-21",
      "completion_date": "2026-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-10-23",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07219693"
    },
    {
      "nct_id": "NCT00186433",
      "title": "A Longitudinal Study of Plasma EBV DNA in Nasopharyngeal Carcinoma From Both Endemic and Non-Endemic Patient Populations",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mouth Cancer",
        "Lip Cancer",
        "Throat Cancer",
        "Lip Neoplasms",
        "Head and Neck Cancers"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2001-11",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2015-05-27",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00186433"
    },
    {
      "nct_id": "NCT02225158",
      "title": "Immune Responses to Mycobacterium Tuberculosis (Mtb) in People With Latent Tuberculosis Infection With or Without Concomitant Helminth Infection",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Latent Tuberculosis Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 1,
      "start_date": "2014-08-15",
      "completion_date": "2017-05-11",
      "has_results": false,
      "last_update_posted_date": "2017-07-02",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 2,
      "location_summary": "Bethesda, Maryland • Silver Spring, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Silver Spring",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02225158"
    },
    {
      "nct_id": "NCT01957514",
      "title": "Collecting, Analyzing, and Storing Samples From Patients With Metastatic, Triple Negative Breast Cancer Receiving Anti-cancer Therapy",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Estrogen Receptor Negative",
        "HER2/Neu Negative",
        "Progesterone Receptor Negative",
        "Stage IV Breast Cancer AJCC v6 and v7",
        "Triple-Negative Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cytology Specimen Collection Procedure",
          "type": "OTHER"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Washington",
      "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": 31,
      "start_date": "2013-10-28",
      "completion_date": "2018-06-30",
      "has_results": false,
      "last_update_posted_date": "2021-09-30",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 2,
      "location_summary": "Seattle, Washington • Tacoma, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        },
        {
          "city": "Tacoma",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01957514"
    },
    {
      "nct_id": "NCT03447899",
      "title": "Longitudinal, Multi-Dimensional Assessment of Recovery and Added Benefit of a Behavioral Health Intervention for Children With Abusive Head Trauma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Non-Accidental Traumatic Head Injury to Child"
      ],
      "interventions": [
        {
          "name": "Attachment and Biobehavioral Catch-up (ABC)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Months",
        "maximum_age": "2 Years",
        "sex": "ALL",
        "summary": "3 Months to 2 Years"
      },
      "enrollment_count": 7,
      "start_date": "2018-04-01",
      "completion_date": "2020-06-30",
      "has_results": false,
      "last_update_posted_date": "2020-09-10",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03447899"
    },
    {
      "nct_id": "NCT01750411",
      "title": "Severe Asthma Research Program - Wake Forest University",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma",
        "Severe Persistent Asthma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Wake Forest University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Years and older"
      },
      "enrollment_count": 87,
      "start_date": "2012-12",
      "completion_date": "2021-01-15",
      "has_results": false,
      "last_update_posted_date": "2021-04-01",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia • Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01750411"
    },
    {
      "nct_id": "NCT00615485",
      "title": "Longitudinal Study of Bone Mineral Density in Survivors of Solid Pediatric Cancers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "State University of New York - Upstate Medical University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "7 Years to 40 Years"
      },
      "enrollment_count": 38,
      "start_date": "2006-01",
      "completion_date": "2013-05",
      "has_results": false,
      "last_update_posted_date": "2013-05-30",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 1,
      "location_summary": "Syracuse, New York",
      "locations": [
        {
          "city": "Syracuse",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00615485"
    },
    {
      "nct_id": "NCT07885085",
      "title": "Postsurgical Pain and Opioid Use in Older Adults: Effects of Mild Cognitive Impairment",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mild Cognitive Impairment (MCI)",
        "Opioid Use",
        "Cognitive Dysfunction",
        "Postoperative Pain"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Miklos Kertai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 552,
      "start_date": "2027-01",
      "completion_date": "2032-01",
      "has_results": false,
      "last_update_posted_date": "2026-10-21",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07885085"
    },
    {
      "nct_id": "NCT02554825",
      "title": "Healthy Futures Evaluation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sexual Behavior"
      ],
      "interventions": [
        {
          "name": "Healthy Futures",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "JSI Research & Training Institute, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "10 Years to 15 Years"
      },
      "enrollment_count": 1344,
      "start_date": "2011-08",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2015-09-18",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02554825"
    },
    {
      "nct_id": "NCT03251118",
      "title": "A 5-year Longitudinal Observational Study of Patients Undergoing Therapy for Inflammatory Bowel Disease",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Inflammatory Bowel Diseases",
        "Crohn's Disease",
        "Ulcerative Colitis",
        "Indeterminate Colitis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Target PharmaSolutions, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 15000,
      "start_date": "2017-07-24",
      "completion_date": "2027-03",
      "has_results": false,
      "last_update_posted_date": "2026-03-17",
      "last_synced_at": "2026-11-03T06:08:44.550Z",
      "location_count": 37,
      "location_summary": "Lancaster, California • Mission Hills, California • Sacramento, California + 33 more",
      "locations": [
        {
          "city": "Lancaster",
          "state": "California"
        },
        {
          "city": "Mission Hills",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03251118"
    }
  ]
}