{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Symptom+questionnaires+-+Observational+Study&page=2",
    "query": {
      "intervention": "Symptom questionnaires - Observational 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?intervention=Symptom+questionnaires+-+Observational+Study&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-27T16:10:29.265Z",
  "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": "NCT07623993",
      "title": "Prospective Observational Study of Smartphone-Based AI Self-Monitoring During Non-Surgical Treatment for Thyroid Eye Disease (THYROSCOPE)",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Thyroid Eye Disease (TED)",
        "Graves Ophthalmopathy",
        "Thyroid Associated Ophthalmopathies"
      ],
      "interventions": [
        {
          "name": "Smartphone-based AI self-monitoring application (Glandy CAS/EXO/LID)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "THYROSCOPE INC.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2026-07-01",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-03",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 1,
      "location_summary": "San Jose, California",
      "locations": [
        {
          "city": "San Jose",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07623993"
    },
    {
      "nct_id": "NCT06866444",
      "title": "Duloxetine Metabolism and Fibromyalgia",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fibromyalgia",
        "Duloxetine"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-05-01",
      "completion_date": "2027-05-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06866444"
    },
    {
      "nct_id": "NCT04034992",
      "title": "A Study on Patients With Chronic Kidney Disease (CKD) to Assess Treatment Experience and Patterns, Effect of the Treatment, Patient Outcomes and Patient Quality of Life",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "ALL",
        "summary": "18 Years to 130 Years"
      },
      "enrollment_count": 1052,
      "start_date": "2019-09-11",
      "completion_date": "2023-06-30",
      "has_results": false,
      "last_update_posted_date": "2024-03-06",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 11,
      "location_summary": "Riverside, California • San Francisco, California • Sanford, Florida + 8 more",
      "locations": [
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Sanford",
          "state": "Florida"
        },
        {
          "city": "Sebring",
          "state": "Florida"
        },
        {
          "city": "Plymouth",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04034992"
    },
    {
      "nct_id": "NCT04150783",
      "title": "Computational Modeling of Cleft Lip Nasal Deformity and Assessment of Nasal Function and Treatment Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cleft Lip and Nose",
        "Nasal Obstruction"
      ],
      "interventions": [
        {
          "name": "Surgical repair for nasal obstruction",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2019-11-01",
      "completion_date": "2025-07-30",
      "has_results": false,
      "last_update_posted_date": "2025-11-19",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04150783"
    },
    {
      "nct_id": "NCT04293900",
      "title": "Diet, Physical Activity and Body Composition Changes During R-CHOP",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Non-Hodgkin Lymphoma",
        "DLBCL",
        "Diffuse Large B Cell Lymphoma"
      ],
      "interventions": [
        {
          "name": "24-hour dietary recall",
          "type": "OTHER"
        },
        {
          "name": "Hand grip strength",
          "type": "OTHER"
        },
        {
          "name": "International Physical Activity Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Patient-reported outcomes survey",
          "type": "OTHER"
        },
        {
          "name": "Pittsburgh Sleep Quality Index",
          "type": "OTHER"
        },
        {
          "name": "Functional Assessment of Cancer Treatment - Lymphoma",
          "type": "OTHER"
        },
        {
          "name": "urine sample (optional)",
          "type": "OTHER"
        },
        {
          "name": "fecal sample (optional)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "George Washington University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2021-01",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2020-10-06",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04293900"
    },
    {
      "nct_id": "NCT04990726",
      "title": "Immune Related Toxicity and Symptom Burden in Chronic Cancer Survivors With Melanoma Receiving Adjuvant Immunotherapy With Immune Checkpoint Inhibitors",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Clinical Stage III Cutaneous Melanoma AJCC v8",
        "Pathologic Stage III Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIA Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIB Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIC Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIID Cutaneous Melanoma AJCC v8",
        "Melanoma, Stage II",
        "Melanoma Stage IV"
      ],
      "interventions": [
        {
          "name": "Assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson 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": 126,
      "start_date": "2019-12-05",
      "completion_date": "2027-02-02",
      "has_results": false,
      "last_update_posted_date": "2026-09-18",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04990726"
    },
    {
      "nct_id": "NCT07377929",
      "title": "Intradetrusor Onabotulinumtoxin A (Botox) at the Time of Transurethral Resection of the Prostate or Transurethral Waterjet Ablation of the Prostate for Mixed Lower Urinary Tract Symptoms",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Benign Prostatic Hypertrophy (BPH)",
        "Lower Urinary Track Symptoms"
      ],
      "interventions": [
        {
          "name": "Survey using a questionnaire.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Benaroya Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2026-01-19",
      "completion_date": "2027-05-01",
      "has_results": false,
      "last_update_posted_date": "2026-01-30",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07377929"
    },
    {
      "nct_id": "NCT04875286",
      "title": "Patient Reported Symptom Control With THC or CBD Use",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer-Associated Pain",
        "Hematopoietic and Lymphoid Cell Neoplasm",
        "Malignant Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "M.D. Anderson 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": 200,
      "start_date": "2021-02-03",
      "completion_date": "2027-02-02",
      "has_results": false,
      "last_update_posted_date": "2026-09-11",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 2,
      "location_summary": "Gilbert, Arizona • Houston, Texas",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04875286"
    },
    {
      "nct_id": "NCT07583368",
      "title": "Chronic Pain, Emotions and Professional Football",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Pain",
        "Chronic Pain (Back / Neck)"
      ],
      "interventions": [
        {
          "name": "No Intervention: Observational Cohort",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Evidence In Motion",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2025-07-18",
      "completion_date": "2026-01-09",
      "has_results": false,
      "last_update_posted_date": "2026-05-13",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 1,
      "location_summary": "Story City, Iowa",
      "locations": [
        {
          "city": "Story City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07583368"
    },
    {
      "nct_id": "NCT03808038",
      "title": "Symptoms of Lower Urinary Tract Dysfunction Protocol 2/Recall Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lower Urinary Tract Symptoms"
      ],
      "interventions": [
        {
          "name": "None- Observational Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Arbor Research Collaborative for Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 515,
      "start_date": "2017-05-26",
      "completion_date": "2018-05-31",
      "has_results": false,
      "last_update_posted_date": "2019-01-17",
      "last_synced_at": "2026-09-27T16:10:29.265Z",
      "location_count": 6,
      "location_summary": "Chicago, Illinois • Iowa City, Iowa • Ann Arbor, Michigan + 3 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03808038"
    }
  ]
}