{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Numerical+rate+Scale+%28NRS%29",
    "query": {
      "intervention": "Numerical rate Scale (NRS)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 37,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Numerical+rate+Scale+%28NRS%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-07T17:16:52.585Z",
  "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": "NCT04285853",
      "title": "Are Opioids Needed After ACL Reconstruction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anterior Cruciate Ligament Rupture"
      ],
      "interventions": [
        {
          "name": "Oxycodone",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "14 Years to 40 Years"
      },
      "enrollment_count": 98,
      "start_date": "2020-09-16",
      "completion_date": "2022-09-19",
      "has_results": true,
      "last_update_posted_date": "2023-10-11",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Tucker, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Tucker",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04285853"
    },
    {
      "nct_id": "NCT07094542",
      "title": "Jaw Muscle Pain Post Wisdom Molar Surgery",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Post Operative Pain",
        "Impacted Third Molar Tooth",
        "Muscle Pain"
      ],
      "interventions": [
        {
          "name": "Temporo-masseteric Nerve Block Injection",
          "type": "DRUG"
        },
        {
          "name": "Oral Pain Medications only",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2026-09",
      "completion_date": "2030-05",
      "has_results": false,
      "last_update_posted_date": "2026-06-18",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 1,
      "location_summary": "Newark, New Jersey",
      "locations": [
        {
          "city": "Newark",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07094542"
    },
    {
      "nct_id": "NCT04124289",
      "title": "A Functional Pain Scale to Improve the Patient Experience",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pain Measurement"
      ],
      "interventions": [
        {
          "name": "Pain measurement using 3 scales",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The Guthrie Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2019-10-29",
      "completion_date": "2020-07-02",
      "has_results": false,
      "last_update_posted_date": "2023-01-13",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 1,
      "location_summary": "Sayre, Pennsylvania",
      "locations": [
        {
          "city": "Sayre",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04124289"
    },
    {
      "nct_id": "NCT05509400",
      "title": "Efficacy and Tolerability of Rimegepant for the Acute Treatment of Migraine in Adults Unsuitable for Triptan Use",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "Rimegepant",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 813,
      "start_date": "2022-10-18",
      "completion_date": "2025-06-10",
      "has_results": true,
      "last_update_posted_date": "2026-04-21",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 23,
      "location_summary": "Los Angeles, California • Stamford, Connecticut • Lake City, Florida + 20 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Stamford",
          "state": "Connecticut"
        },
        {
          "city": "Lake City",
          "state": "Florida"
        },
        {
          "city": "Ocoee",
          "state": "Florida"
        },
        {
          "city": "Ormond Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05509400"
    },
    {
      "nct_id": "NCT05379179",
      "title": "Ketamine Pilot Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Rattlesnake Envenomation"
      ],
      "interventions": [
        {
          "name": "Ketamine",
          "type": "DRUG"
        },
        {
          "name": "Fentanyl",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Meghan Spyres",
      "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": 3,
      "start_date": "2022-06-20",
      "completion_date": "2022-08-27",
      "has_results": true,
      "last_update_posted_date": "2024-02-14",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05379179"
    },
    {
      "nct_id": "NCT06279195",
      "title": "Phenotyping of Idiopathic Pelvic Pain With Real-time Uterine Imaging and Relugolix-Combination Therapy Treatment",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pelvic Pain"
      ],
      "interventions": [
        {
          "name": "Relugolix (40 mg) /estradiol (1 mg)/norethisterone acetate (0.5 mg) oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Endeavor Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2024-06-01",
      "completion_date": "2025-11-02",
      "has_results": false,
      "last_update_posted_date": "2025-08-28",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 1,
      "location_summary": "Evanston, Illinois",
      "locations": [
        {
          "city": "Evanston",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06279195"
    },
    {
      "nct_id": "NCT06510244",
      "title": "Pain Perception Measurement by EEG and NRS",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pain",
        "Electroencephalography",
        "Toothache"
      ],
      "interventions": [
        {
          "name": "EEG EMOTIV",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Cleveland Dental Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "20 Years to 60 Years"
      },
      "enrollment_count": 100,
      "start_date": "2024-01-01",
      "completion_date": "2025-04",
      "has_results": false,
      "last_update_posted_date": "2024-07-22",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06510244"
    },
    {
      "nct_id": "NCT05461092",
      "title": "Regional Nerve Blocks to Improve Analgesia and Recovery in Older Adults Undergoing Spinal Fusion",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Delirium",
        "Pain, Back",
        "Spinal Fusion",
        "Thoracolumbar Interfascial Plane Block"
      ],
      "interventions": [
        {
          "name": "Thoracolumbar Interfascial Plane (TLIP) Block of bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "Blood Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "3D CAM Delirium Severity Scoring",
          "type": "OTHER"
        },
        {
          "name": "Generalized Anxiety Disorder 7-item (GAD-7) scale",
          "type": "OTHER"
        },
        {
          "name": "Numerical Rating Score (NRS)",
          "type": "OTHER"
        },
        {
          "name": "PROMIS-Pain Interference",
          "type": "OTHER"
        },
        {
          "name": "Oswestry Disability Index (ODI)",
          "type": "OTHER"
        },
        {
          "name": "Saint Louis University Mental Status Examination (SLUMs)",
          "type": "OTHER"
        },
        {
          "name": "Delirium Rating Scale-Revised-98 (DRS)",
          "type": "OTHER"
        },
        {
          "name": "Telephone Interview for Cognitive Status - Modified (TICS-M)",
          "type": "OTHER"
        },
        {
          "name": "Opioid Equivalents measured by Morphine Milligram Equivalents (MME)",
          "type": "OTHER"
        },
        {
          "name": "Patient Health Questionnaire depression scale (PHQ-8)",
          "type": "OTHER"
        },
        {
          "name": "Pain Catastrophizing",
          "type": "OTHER"
        },
        {
          "name": "Fear Avoidance Beliefs Questionnaire (FABQ)",
          "type": "OTHER"
        },
        {
          "name": "Opioid Side Effects and Likeability Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Daily Pain Trajectory",
          "type": "OTHER"
        },
        {
          "name": "Tampa Scale of Kinesiophobia",
          "type": "OTHER"
        },
        {
          "name": "Quality of Recovery 15",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "University of Iowa",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2024-01-01",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-27",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05461092"
    },
    {
      "nct_id": "NCT04585451",
      "title": "Expanded Development of a Medical Device Utilizing an EEG-Based Algorithm for the Objective Quantification of Pain",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Pain"
      ],
      "interventions": [
        {
          "name": "ALGOS System",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "PainQx, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 334,
      "start_date": "2020-07-23",
      "completion_date": "2022-01-05",
      "has_results": true,
      "last_update_posted_date": "2023-05-06",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 5,
      "location_summary": "Golden, Colorado • New Hyde Park, New York • New York, New York + 1 more",
      "locations": [
        {
          "city": "Golden",
          "state": "Colorado"
        },
        {
          "city": "New Hyde Park",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Valley Stream",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04585451"
    },
    {
      "nct_id": "NCT05922514",
      "title": "A Clinical Registry of Spontaneous Intracranial Hypotension",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Spontaneous Intracranial Hypotension"
      ],
      "interventions": [
        {
          "name": "Transvenous Embolization of Cerebrospinal Fluid-Venous Fistula",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 400,
      "start_date": "2023-06-18",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-09-07T17:16:52.585Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05922514"
    }
  ]
}