{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=26",
    "query": {
      "intervention": "Observation only",
      "page": 26
    },
    "page_size": 10
  },
  "pagination": {
    "page": 26,
    "page_size": 10,
    "total_count": 878,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=27&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=25&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-31T19:25:53.475Z",
  "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": "NCT05382650",
      "title": "Survey of Human Rabies Immune Globulin Safety in Children",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Rabies",
        "Rabies Human",
        "Rabies Virus Infection",
        "Pediatrics"
      ],
      "interventions": [
        {
          "name": "Human rabies immune globulin 300 IU/mL",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "The Methodist Hospital Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "Up to 17 Years"
      },
      "enrollment_count": 35,
      "start_date": "2023-02-22",
      "completion_date": "2025-10-15",
      "has_results": false,
      "last_update_posted_date": "2025-11-13",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 2,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05382650"
    },
    {
      "nct_id": "NCT04139642",
      "title": "Standing Balance as the Fifth Vital Sign in Clinical Setting",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Accidental Fall",
        "Postural Balance",
        "Clinical Decision-making"
      ],
      "interventions": [
        {
          "name": "SimpleSway",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 45,
      "start_date": "2020-03-02",
      "completion_date": "2022-08-31",
      "has_results": true,
      "last_update_posted_date": "2023-10-25",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04139642"
    },
    {
      "nct_id": "NCT02608463",
      "title": "Neuropathic Pain in Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain",
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "painDETECT Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pain Catastrophizing Scale",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pain Intensity Scale, Pain Interference Scale, Pain Behavior Scale",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Beck Depression Inventory",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Visual Analogue Scale",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Patient's Global Impression of Change Scale & Clinical Global Impression-Global Improvement Scale",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Transcranial Magnetic Stimulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DEVICE"
      ],
      "sponsor": "University of Arkansas",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 15,
      "start_date": "2016-01-01",
      "completion_date": "2019-04-19",
      "has_results": true,
      "last_update_posted_date": "2021-06-23",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02608463"
    },
    {
      "nct_id": "NCT03770806",
      "title": "Factors Affecting the Speed of Recovery After ACL Reconstruction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anterior Cruciate Ligament Injury",
        "ACL Injury",
        "ACL - Anterior Cruciate Ligament Rupture"
      ],
      "interventions": [
        {
          "name": "Femoral Nerve Block",
          "type": "PROCEDURE"
        },
        {
          "name": "Adductor Nerve Block",
          "type": "PROCEDURE"
        },
        {
          "name": "No Block",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 48,
      "start_date": "2017-03-24",
      "completion_date": "2018-06-11",
      "has_results": false,
      "last_update_posted_date": "2018-12-10",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03770806"
    },
    {
      "nct_id": "NCT01107106",
      "title": "Safety, Tolerability, and Efficacy of ellaOne® (Ulipristal Acetate) for Emergency Contraception in Postmenarcheal Adolescent Girls and Women",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Contraception"
      ],
      "interventions": [
        {
          "name": "ellaOne® (ulipristal acetate)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "HRA Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 579,
      "start_date": "2010-05",
      "completion_date": "2013-02",
      "has_results": false,
      "last_update_posted_date": "2013-05-15",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 4,
      "location_summary": "Denver, Colorado • Lakewood, Colorado • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Lakewood",
          "state": "Colorado"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01107106"
    },
    {
      "nct_id": "NCT05877833",
      "title": "Evaluating the Safety and Performance Characteristics of Ephemeral® Tattoo Ink in Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Tattoo; Pigmentation"
      ],
      "interventions": [
        {
          "name": "Vibrancy Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ephemeral Solutions Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 45,
      "start_date": "2020-08-10",
      "completion_date": "2023-02-01",
      "has_results": false,
      "last_update_posted_date": "2023-05-30",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 1,
      "location_summary": "Milford, Connecticut",
      "locations": [
        {
          "city": "Milford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05877833"
    },
    {
      "nct_id": "NCT01199016",
      "title": "Effect of Prevnar 13 on Ear Infections in Children",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Otitis Media"
      ],
      "interventions": [
        {
          "name": "Tympanocentesis",
          "type": "PROCEDURE"
        },
        {
          "name": "Nose/throat swab",
          "type": "PROCEDURE"
        },
        {
          "name": "Observational",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "30 Months",
        "sex": "ALL",
        "summary": "6 Months to 30 Months"
      },
      "enrollment_count": 239,
      "start_date": "2010-09",
      "completion_date": "2016-01",
      "has_results": true,
      "last_update_posted_date": "2017-03-01",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 7,
      "location_summary": "Penfield, New York • Rochester, New York",
      "locations": [
        {
          "city": "Penfield",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01199016"
    },
    {
      "nct_id": "NCT02404714",
      "title": "A Multi-Center Study of the CF Quantum® Sweat Test System",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "Iontophoresis sweat test",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Polychrome Medical, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 55,
      "start_date": "2017-02-08",
      "completion_date": "2018-07-01",
      "has_results": false,
      "last_update_posted_date": "2018-08-31",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 6,
      "location_summary": "Birmingham, Alabama • Chicago, Illinois • Ann Arbor, Michigan + 3 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Dayton",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02404714"
    },
    {
      "nct_id": "NCT02187861",
      "title": "A Study Evaluating the Safety and Efficacy of Venetoclax (GDC-0199) Plus Bendamustine + Rituximab (BR) in Comparison With BR or Venetoclax Plus Rituximab in Participants With Relapsed and Refractory Follicular Non-Hodgkin's Lymphoma (fNHL)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Follicular Lymphoma"
      ],
      "interventions": [
        {
          "name": "Venetoclax",
          "type": "DRUG"
        },
        {
          "name": "Bendamustine",
          "type": "DRUG"
        },
        {
          "name": "Rituximab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 163,
      "start_date": "2014-12-01",
      "completion_date": "2018-03-16",
      "has_results": true,
      "last_update_posted_date": "2019-06-05",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 17,
      "location_summary": "Mobile, Alabama • Tucson, Arizona • Los Angeles, California + 12 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Austell",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02187861"
    },
    {
      "nct_id": "NCT05625529",
      "title": "ExoLuminate Study for Early Detection of Pancreatic Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pancreas Cancer",
        "Exosomes",
        "Extracellular Vesicles",
        "Pancreatic Neoplasms"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Biological Dynamics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1000,
      "start_date": "2022-12-19",
      "completion_date": "2028-01-01",
      "has_results": false,
      "last_update_posted_date": "2025-07-28",
      "last_synced_at": "2026-10-31T19:25:53.475Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05625529"
    }
  ]
}