{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Cross-sectional+study%2Fno+intervention",
    "query": {
      "intervention": "Cross-sectional study/no intervention"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 44,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Cross-sectional+study%2Fno+intervention&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T21:35:24.595Z",
  "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": "NCT00987831",
      "title": "Biomarkers of Lupus Disease: Serial Biomarker Sampling in Patients With Active Systemic Lupus Erythematosus (SLE)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Systemic Lupus Erythematosus"
      ],
      "interventions": [
        {
          "name": "Group B SLE one blood donation",
          "type": "OTHER"
        },
        {
          "name": "Blood drawing only Group C",
          "type": "OTHER"
        },
        {
          "name": "Group A SLE prospective study",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Oklahoma Medical Research Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "14 Years to 70 Years"
      },
      "enrollment_count": 158,
      "start_date": "2009-05",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2014-10-20",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 2,
      "location_summary": "Oklahoma City, Oklahoma • Collegeville, Pennsylvania",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Collegeville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00987831"
    },
    {
      "nct_id": "NCT01167608",
      "title": "Barriers to Mental Healthcare Utilization in Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson's Disease",
        "Depression",
        "Anxiety"
      ],
      "interventions": [
        {
          "name": "No Intervention. This is a cross-sectional survey study.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 883,
      "start_date": "2010-06",
      "completion_date": "2013-03",
      "has_results": true,
      "last_update_posted_date": "2019-07-16",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 1,
      "location_summary": "Piscataway, New Jersey",
      "locations": [
        {
          "city": "Piscataway",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01167608"
    },
    {
      "nct_id": "NCT01787864",
      "title": "Prevalence of Dysplasia of the Gastric Cardia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Barrett's Esophagus",
        "Intestinal Metaplasia",
        "Intramucosal Adenocarcinoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of North Carolina, Chapel Hill",
      "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": 170,
      "start_date": "2013-02",
      "completion_date": "2017-05",
      "has_results": false,
      "last_update_posted_date": "2017-05-16",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01787864"
    },
    {
      "nct_id": "NCT07226284",
      "title": "Effects of Vagal Nerve Stimulation on Leg Muscle Activity and Posture in Parkinson's Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PARKINSON DISEASE (Disorder)",
        "Parkinson's Disease (PD)"
      ],
      "interventions": [
        {
          "name": "Vagal nerve stimulation",
          "type": "DEVICE"
        },
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "76 Years",
        "sex": "ALL",
        "summary": "21 Years to 76 Years"
      },
      "enrollment_count": 75,
      "start_date": "2026-02-10",
      "completion_date": "2029-01",
      "has_results": false,
      "last_update_posted_date": "2026-02-13",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07226284"
    },
    {
      "nct_id": "NCT03007134",
      "title": "Multicenter International Cross-Sectional Evaluation of Pulmonary Alveolar Proteinosis Trial",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Alveolar Proteinosis"
      ],
      "interventions": [
        {
          "name": "Retrospective Chart Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 73,
      "start_date": "2007-07",
      "completion_date": "2011-07",
      "has_results": false,
      "last_update_posted_date": "2017-01-02",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 2,
      "location_summary": "Greenville, North Carolina • Cincinnati, Ohio",
      "locations": [
        {
          "city": "Greenville",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03007134"
    },
    {
      "nct_id": "NCT04028921",
      "title": "Activity, Adiposity, and Appetite in Adolescents 2",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obesity",
        "Metabolic Disease",
        "Insulin Sensitivity"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's Mercy Hospital Kansas City",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "14 Years to 17 Years"
      },
      "enrollment_count": 46,
      "start_date": "2022-01-03",
      "completion_date": "2024-06-30",
      "has_results": true,
      "last_update_posted_date": "2025-04-02",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 1,
      "location_summary": "Kansas City, Missouri",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04028921"
    },
    {
      "nct_id": "NCT00442468",
      "title": "Airway Limitation Study: Study In Primary Care Centers Of Chronic Bronchitis In Long-Term Cigarette Smokers Of At Least 40 Years Of Age With Symptoms Of Cough And Shortness Of Breath",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive"
      ],
      "interventions": [
        {
          "name": "Non-interventional study.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 1283,
      "start_date": "2007-04",
      "completion_date": "2007-09",
      "has_results": true,
      "last_update_posted_date": "2013-01-10",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 47,
      "location_summary": "Highlands Ranch, Colorado • Wheat Ridge, Colorado • Clearwater, Florida + 43 more",
      "locations": [
        {
          "city": "Highlands Ranch",
          "state": "Colorado"
        },
        {
          "city": "Wheat Ridge",
          "state": "Colorado"
        },
        {
          "city": "Clearwater",
          "state": "Florida"
        },
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        },
        {
          "city": "Largo",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00442468"
    },
    {
      "nct_id": "NCT02751762",
      "title": "A Prospective Investigation of the Risks of Opioid Misuse, Abuse, and Addiction Among Patients Treated With Opioids for the Treatment of Chronic Pain",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Opioid-Related Disorders",
        "Opiate Addiction",
        "Narcotic Abuse",
        "Drug Abuse"
      ],
      "interventions": [
        {
          "name": "Observation Only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Member Companies of the Opioid PMR Consortium",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "18 Years to 79 Years"
      },
      "enrollment_count": 3600,
      "start_date": "2017-11-01",
      "completion_date": "2023-01-31",
      "has_results": false,
      "last_update_posted_date": "2025-01-29",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 2,
      "location_summary": "Portland, Oregon • Seattle, Washington",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02751762"
    },
    {
      "nct_id": "NCT06208943",
      "title": "Neural and Cognitive Consequences of COVID-19 Survival",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID Long-Haul",
        "COVID-19",
        "COVID-19 Pandemic",
        "Brain Fog",
        "Memory Deficits",
        "Concentration Ability Impaired",
        "Fatigue"
      ],
      "interventions": [
        {
          "name": "cross-sectional MRI and EEG assessments (NO INTERVENTION)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "San Francisco Veterans Affairs Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 150,
      "start_date": "2021-10-01",
      "completion_date": "2025-09-30",
      "has_results": false,
      "last_update_posted_date": "2024-04-12",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06208943"
    },
    {
      "nct_id": "NCT02293265",
      "title": "Cross-sectional Study for Identification and Description of Severe Asthma Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Short Acting Beta Agonist (SABA)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 767,
      "start_date": "2014-12",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2016-04-04",
      "last_synced_at": "2026-09-11T21:35:24.595Z",
      "location_count": 21,
      "location_summary": "Little Rock, Arkansas • Fresno, California • Los Angeles, California + 18 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02293265"
    }
  ]
}