{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retrospective+Study&page=2",
    "query": {
      "condition": "Retrospective Study",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retrospective+Study&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-10T15:30:06.796Z",
  "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": "NCT05375097",
      "title": "Real-world Impact of Erenumab on Sick-leaves, Health Care Resource Use and Comorbidities.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "Erenumab",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 162,
      "start_date": "2020-07-03",
      "completion_date": "2021-05-14",
      "has_results": false,
      "last_update_posted_date": "2022-07-01",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05375097"
    },
    {
      "nct_id": "NCT03152513",
      "title": "A Review of \"Anesthesia Stat!\" in the Pediatric Operating Room",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Anesthesia",
        "Surgery",
        "Critical Illness",
        "Critical Incident"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "Up to 17 Years"
      },
      "enrollment_count": 83,
      "start_date": "2017-03-01",
      "completion_date": "2018-09-11",
      "has_results": false,
      "last_update_posted_date": "2019-04-18",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03152513"
    },
    {
      "nct_id": "NCT00826605",
      "title": "Urobilinogen, Maternal Weight Loss and Impending Parturition at Term",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Increase in Urobilinogen in Urine Prior to Delivery",
        "Weight Loss After 37 Weeks Gestation Prior to Delivery"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Oklahoma State University Center for Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "34 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 34 Years · Female only"
      },
      "enrollment_count": 200,
      "start_date": "2009-01",
      "completion_date": "2009-10",
      "has_results": false,
      "last_update_posted_date": "2010-01-28",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 2,
      "location_summary": "Tulsa, Oklahoma",
      "locations": [
        {
          "city": "Tulsa",
          "state": "Oklahoma"
        },
        {
          "city": "Tulsa",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00826605"
    },
    {
      "nct_id": "NCT00321945",
      "title": "A Retrospective Analysis of the Use of ACE-inhibitors and Angiotensin Receptor Blockers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation",
        "Atrial Flutter"
      ],
      "interventions": [
        {
          "name": "ACE-Inhibitors and Angiotensin Receptor Blockers",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 546,
      "start_date": "2005-12",
      "completion_date": "2009-10",
      "has_results": false,
      "last_update_posted_date": "2013-09-27",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Decatur, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00321945"
    },
    {
      "nct_id": "NCT02776072",
      "title": "Observational Study to Characterize Real-world Clinical Outcomes With Relapsing-remitting Multiple Sclerosis (RRMS)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2978,
      "start_date": "2016-05",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2017-03-23",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 38,
      "location_summary": "Homewood, Alabama • Gilbert, Arizona • Hanford, California + 33 more",
      "locations": [
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Hanford",
          "state": "California"
        },
        {
          "city": "Modesto",
          "state": "California"
        },
        {
          "city": "Santa Ana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02776072"
    },
    {
      "nct_id": "NCT03289000",
      "title": "A Retrospective Study to Evaluate the ConforMIS iTotal® Posterior Stabilized (PS) Knee Replacement System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteo Arthritis Knee"
      ],
      "interventions": [
        {
          "name": "iTotal Posterior Stabilized (PS) Knee Replacement System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Restor3D",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 93,
      "start_date": "2017-04-24",
      "completion_date": "2017-12-31",
      "has_results": false,
      "last_update_posted_date": "2023-10-25",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 2,
      "location_summary": "Nashville, Tennessee • Huntington, West Virginia",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Huntington",
          "state": "West Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03289000"
    },
    {
      "nct_id": "NCT03074357",
      "title": "Urine, DNA and Clinical Information Collection From Patients With Alport Nephropathy.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alport Nephropathy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "5 Years and older"
      },
      "enrollment_count": 68,
      "start_date": "2017-04-04",
      "completion_date": "2018-03-23",
      "has_results": false,
      "last_update_posted_date": "2018-11-09",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03074357"
    },
    {
      "nct_id": "NCT05541328",
      "title": "Comparison of Clinical Outcomes Among Patients Treated With Tisagenlecleucel",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diffuse Large B-cell Lymphoma"
      ],
      "interventions": [
        {
          "name": "Tisagenlecleucel",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 169,
      "start_date": "2020-02-03",
      "completion_date": "2021-02-05",
      "has_results": false,
      "last_update_posted_date": "2022-09-15",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05541328"
    },
    {
      "nct_id": "NCT03798847",
      "title": "Safety and Performance of Journey II XR Total Knee System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Journey II XR Total Knee System"
      ],
      "interventions": [
        {
          "name": "Journey II XR TKA",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Smith & Nephew, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 683,
      "start_date": "2018-11-01",
      "completion_date": "2020-09-10",
      "has_results": false,
      "last_update_posted_date": "2023-07-14",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 12,
      "location_summary": "Phoenix, Arizona • Aurora, Illinois • Port Huron, Michigan + 9 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Aurora",
          "state": "Illinois"
        },
        {
          "city": "Port Huron",
          "state": "Michigan"
        },
        {
          "city": "Reno",
          "state": "Nevada"
        },
        {
          "city": "Somerset",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03798847"
    },
    {
      "nct_id": "NCT03059745",
      "title": "Use of Robotics for Cholecystectomy; Retrospective Review of Outcomes, Set Up and Learning Curves",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cholecystitis",
        "Cholelithiasis"
      ],
      "interventions": [
        {
          "name": "Cholecystectomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 200,
      "start_date": "2004-06",
      "completion_date": "2017-03-03",
      "has_results": false,
      "last_update_posted_date": "2019-06-11",
      "last_synced_at": "2026-06-10T15:30:06.796Z",
      "location_count": 2,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03059745"
    }
  ]
}