{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Longitudinal+Studies&page=67",
    "query": {
      "condition": "Longitudinal Studies",
      "page": 67
    },
    "page_size": 10
  },
  "pagination": {
    "page": 67,
    "page_size": 10,
    "total_count": 8691,
    "total_pages": 870,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Longitudinal+Studies&page=68&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Longitudinal+Studies&page=66&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-09T22:26:53.868Z",
  "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": "NCT03859635",
      "title": "Erector Spinae Block Versus Surgeon Infiltration in VATS Procedures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pain, Postoperative",
        "Thoracic",
        "Acute Pain"
      ],
      "interventions": [
        {
          "name": "Liposomal Bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "Bupivacaine, 0.25%",
          "type": "DRUG"
        },
        {
          "name": "Bupivacaine, 0.5%",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 120,
      "start_date": "2019-02-07",
      "completion_date": "2022-11-07",
      "has_results": true,
      "last_update_posted_date": "2025-02-28",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03859635"
    },
    {
      "nct_id": "NCT04506008",
      "title": "Hypofractionated Radiotherapy Followed by Surgical Resection in the Treatment of Soft Tissue Sarcomas",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Soft Tissue Sarcomas"
      ],
      "interventions": [
        {
          "name": "Ultra-Hypo-fractionation Radiotherapy",
          "type": "RADIATION"
        },
        {
          "name": "Resection",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Moderately-Hypo-fractionation Radiotherapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Vanderbilt-Ingram 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": 40,
      "start_date": "2021-03-02",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2025-03-28",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04506008"
    },
    {
      "nct_id": "NCT04333225",
      "title": "Hydroxychloroquine in the Prevention of COVID-19 Infection in Healthcare Workers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Baylor Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 221,
      "start_date": "2020-04-03",
      "completion_date": "2020-06-30",
      "has_results": true,
      "last_update_posted_date": "2021-08-20",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04333225"
    },
    {
      "nct_id": "NCT00902343",
      "title": "Controlled Trial Comparing Nomogram-based Versus Standard Allocation of Acute Normovolemic Hemodilution (ANH) During Hepatic Resection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Liver Cancer"
      ],
      "interventions": [
        {
          "name": "nomogram-based selection for acute normovolemic hemodilution",
          "type": "PROCEDURE"
        },
        {
          "name": "standard selection for ANH based on a planned resection of 3 or more segments",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Memorial Sloan Kettering 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": 149,
      "start_date": "2009-05",
      "completion_date": "2015-04",
      "has_results": false,
      "last_update_posted_date": "2015-08-13",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00902343"
    },
    {
      "nct_id": "NCT02597790",
      "title": "A Prospective, Longitudinal Study of Endothelial Function in HIV/HCV Coinfected Subjects",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV",
        "Hepatitis C"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 87,
      "start_date": "2013-10",
      "completion_date": "2020-01",
      "has_results": true,
      "last_update_posted_date": "2022-01-20",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02597790"
    },
    {
      "nct_id": "NCT01186913",
      "title": "Natural History Study of SCID Disorders",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Severe Combined Immunodeficiency (SCID)",
        "Leaky SCID",
        "Omenn Syndrome",
        "Reticular Dysgenesis",
        "ADA SCID",
        "XSCID"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 690,
      "start_date": "2010-09-02",
      "completion_date": "2028-09",
      "has_results": false,
      "last_update_posted_date": "2020-11-10",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 39,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 34 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01186913"
    },
    {
      "nct_id": "NCT01982760",
      "title": "DDAVP in the Reduction of Post-operative Ecchymosis in Rhinoplasty",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Postoperative Ecchymosis"
      ],
      "interventions": [
        {
          "name": "DDAVP",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 14,
      "start_date": "2013-12",
      "completion_date": "2015-06-25",
      "has_results": true,
      "last_update_posted_date": "2023-08-16",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 1,
      "location_summary": "Lyndhurst, Ohio",
      "locations": [
        {
          "city": "Lyndhurst",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01982760"
    },
    {
      "nct_id": "NCT01493024",
      "title": "Safety & Efficacy of Zirconium Silicate in Chronic Kidney Disease or Moderate Kidney Dysfunction With Mild Hyperkalemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperkalemia",
        "Chronic Kidney Disease",
        "Kidney Dysfunction"
      ],
      "interventions": [
        {
          "name": "Zirconium silicate (ZS)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ZS Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 90,
      "start_date": "2011-11-30",
      "completion_date": "2012-06-30",
      "has_results": true,
      "last_update_posted_date": "2018-06-29",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 9,
      "location_summary": "Tempe, Arizona • Costa Mesa, California • Edgewater, Florida + 6 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Costa Mesa",
          "state": "California"
        },
        {
          "city": "Edgewater",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01493024"
    },
    {
      "nct_id": "NCT00484159",
      "title": "Efficacy and Cost: Benefit Ratio of 0, 1, and 2 Medial Branch Blocks for Lumbar Facet Joint Radiofrequency Denervation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Low Back Pain"
      ],
      "interventions": [
        {
          "name": "Radiofrequency denervation of medial branches",
          "type": "PROCEDURE"
        },
        {
          "name": "0.5% bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "2% lidocaine",
          "type": "DRUG"
        },
        {
          "name": "Radiofrequency denervation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 151,
      "start_date": "2007-02",
      "completion_date": "2009-01",
      "has_results": true,
      "last_update_posted_date": "2011-07-26",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 2,
      "location_summary": "Washington D.C., District of Columbia • Baltimore, Maryland",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00484159"
    },
    {
      "nct_id": "NCT02040896",
      "title": "Who Contributes to the Ordering of CT Scans in Emergency Department Patients?",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Emergency"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1500,
      "start_date": "2014-01",
      "completion_date": "2015-01",
      "has_results": false,
      "last_update_posted_date": "2020-03-27",
      "last_synced_at": "2026-11-09T22:26:53.868Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02040896"
    }
  ]
}