{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Control+group+-+observational&page=20",
    "query": {
      "intervention": "Control group - observational",
      "page": 20
    },
    "page_size": 10
  },
  "pagination": {
    "page": 20,
    "page_size": 10,
    "total_count": 537,
    "total_pages": 54,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Control+group+-+observational&page=21&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Control+group+-+observational&page=19&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-01T06:28:11.292Z",
  "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": "NCT06216600",
      "title": "Women Focused Encounters for Resilience Independence Strength and Eudaimonia",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV Infections",
        "Substance Use",
        "Trauma",
        "Medication Adherence"
      ],
      "interventions": [
        {
          "name": "Acceptance and Commitment Therapy (ACT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Body weight circuit training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Empathetic social support",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control - list of resources",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 300,
      "start_date": "2024-09-19",
      "completion_date": "2028-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-01",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06216600"
    },
    {
      "nct_id": "NCT03189758",
      "title": "Dietary Sodium (DS) Intervention to Reduce Volume Overload and Tissue Sodium in Magnetic Resonance Imaging (MRI) for Hemodialysis (HD) Patients",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Failure, Chronic",
        "Dietary Modification"
      ],
      "interventions": [
        {
          "name": "Observational Control Diet",
          "type": "OTHER"
        },
        {
          "name": "Controlled Dietary Sodium Restriction",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2017-06-19",
      "completion_date": "2021-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-08-03",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03189758"
    },
    {
      "nct_id": "NCT04566302",
      "title": "Pilot Study of Imaging Human Skin With High-Speed Spectrally Encoded Confocal Microscopy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pigmented Lesions",
        "Pigmented Skin Lesion",
        "Pigmented Moles",
        "Skin Lesion"
      ],
      "interventions": [
        {
          "name": "SECM Skin Imaging",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2021-07-19",
      "completion_date": "2021-10-22",
      "has_results": true,
      "last_update_posted_date": "2025-10-29",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04566302"
    },
    {
      "nct_id": "NCT04079660",
      "title": "Glycemic Control Based on Serum Fructosamine Concentration vs. hemoglobinA1c (HbA1c) in Diabetic Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetes"
      ],
      "interventions": [
        {
          "name": "Capillary blood glucose blood draw",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2021-02-01",
      "completion_date": "2021-02-01",
      "has_results": false,
      "last_update_posted_date": "2021-09-22",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04079660"
    },
    {
      "nct_id": "NCT06388109",
      "title": "Positive Peers Intervention Clinical Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Positive Peers mobile app",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "MetroHealth Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "34 Years",
        "sex": "ALL",
        "summary": "13 Years to 34 Years"
      },
      "enrollment_count": 250,
      "start_date": "2024-06-03",
      "completion_date": "2027-11",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 7,
      "location_summary": "Van Nuys, California • Newark, New Jersey • Cincinnati, Ohio + 4 more",
      "locations": [
        {
          "city": "Van Nuys",
          "state": "California"
        },
        {
          "city": "Newark",
          "state": "New Jersey"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06388109"
    },
    {
      "nct_id": "NCT04701671",
      "title": "Project THINK: Trajectories of Health, Ingestive Behaviors, and Neurocognition in Kids",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatric Obesity",
        "Binge-Eating Disorder"
      ],
      "interventions": [
        {
          "name": "Observational (not including MRI scanning)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Observational (including MRI scanning)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "9 Years to 12 Years"
      },
      "enrollment_count": 180,
      "start_date": "2020-12-10",
      "completion_date": "2028-05-09",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 2,
      "location_summary": "Pittsburgh, Pennsylvania • Providence, Rhode Island",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04701671"
    },
    {
      "nct_id": "NCT04706364",
      "title": "Investigation of Brain Plasticity in Autism Spectrum Disorders",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Autism Spectrum Disorder"
      ],
      "interventions": [
        {
          "name": "Neuropsychological Testing",
          "type": "BEHAVIORAL"
        },
        {
          "name": "(Optional) Saliva Collection",
          "type": "GENETIC"
        },
        {
          "name": "Sensory Testing",
          "type": "DEVICE"
        },
        {
          "name": "Electroencephalogram (EEG)",
          "type": "DEVICE"
        },
        {
          "name": "Transcranial Magnetic Stimulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "GENETIC",
        "DEVICE"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "6 Years to 18 Years"
      },
      "enrollment_count": 60,
      "start_date": "2019-06-10",
      "completion_date": "2022-05",
      "has_results": false,
      "last_update_posted_date": "2021-11-05",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04706364"
    },
    {
      "nct_id": "NCT01098292",
      "title": "Observational Study of Control Participants for the MAPP Research Network",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fibromyalgia",
        "Irritable Bowel Syndrome",
        "Fatigue Syndrome, Chronic"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 615,
      "start_date": "2009-12",
      "completion_date": "2014-06",
      "has_results": false,
      "last_update_posted_date": "2014-12-10",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 8,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Stanford, California + 5 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01098292"
    },
    {
      "nct_id": "NCT00853112",
      "title": "A Research Study To Assess The Effectiveness And Safety Of Different Doses Of Oral PF-00489791 In The Treatment Of Adult Patients With Pulmonary Arterial Hypertension",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hypertension, Pulmonary"
      ],
      "interventions": [
        {
          "name": "PF-00489791",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "sildenafil",
          "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": 48,
      "start_date": "2009-04",
      "completion_date": "2010-07",
      "has_results": true,
      "last_update_posted_date": "2017-10-24",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • Gainesville, Florida • Omaha, Nebraska + 2 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00853112"
    },
    {
      "nct_id": "NCT04553757",
      "title": "Seizure Control as a New Metric in Assessing Efficacy of Tumor Treatment in Patients With Low Grade Glioma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Brain Neoplasm",
        "Low Grade Glioma",
        "Seizure Disorder"
      ],
      "interventions": [
        {
          "name": "Survey Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "2020-07-08",
      "completion_date": "2027-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-07",
      "last_synced_at": "2026-11-01T06:28:11.292Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04553757"
    }
  ]
}