{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=High+School+start+time",
    "query": {
      "intervention": "High School start time"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-13T01:30:25.640Z",
  "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": "NCT03766412",
      "title": "High School Start Time and Teen Migraine Frequency",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "High School start time",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 256,
      "start_date": "2018-10-01",
      "completion_date": "2018-10-15",
      "has_results": false,
      "last_update_posted_date": "2024-05-03",
      "last_synced_at": "2026-09-13T01:30:25.640Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03766412"
    },
    {
      "nct_id": "NCT04935710",
      "title": "Prevention and Early Identification for High Risk Youth in School-based Clinics",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Community Mental Health Services",
        "Adolescent Well Being",
        "Resilience, Psychological",
        "Health Equity",
        "Screening"
      ],
      "interventions": [
        {
          "name": "COPE2Thrive",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Cambridge Health Alliance",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "24 Years",
        "sex": "ALL",
        "summary": "12 Years to 24 Years"
      },
      "enrollment_count": 39,
      "start_date": "2022-01-03",
      "completion_date": "2024-03-31",
      "has_results": true,
      "last_update_posted_date": "2026-03-18",
      "last_synced_at": "2026-09-13T01:30:25.640Z",
      "location_count": 5,
      "location_summary": "Cambridge, Massachusetts • Everett, Massachusetts • Somerville, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        },
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        },
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        },
        {
          "city": "Everett",
          "state": "Massachusetts"
        },
        {
          "city": "Somerville",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04935710"
    },
    {
      "nct_id": "NCT04049682",
      "title": "Start Times and Restful Sleep",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Excessive Daytime Somnolence",
        "Sleep Deprivation"
      ],
      "interventions": [
        {
          "name": "Delayed School Start Time",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "13 Years to 18 Years"
      },
      "enrollment_count": 0,
      "start_date": "2019-09",
      "completion_date": "2021-12",
      "has_results": false,
      "last_update_posted_date": "2020-07-15",
      "last_synced_at": "2026-09-13T01:30:25.640Z",
      "location_count": 2,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04049682"
    },
    {
      "nct_id": "NCT04602455",
      "title": "The Impact of Heartfulness Program on Loneliness in High School Students in the US",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Loneliness"
      ],
      "interventions": [
        {
          "name": "Self-Care Program through Heartfulness",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Heartfulness Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "14 Years to 19 Years"
      },
      "enrollment_count": 108,
      "start_date": "2020-06-23",
      "completion_date": "2020-08-15",
      "has_results": false,
      "last_update_posted_date": "2020-10-26",
      "last_synced_at": "2026-09-13T01:30:25.640Z",
      "location_count": 1,
      "location_summary": "Novi, Michigan",
      "locations": [
        {
          "city": "Novi",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04602455"
    },
    {
      "nct_id": "NCT05874232",
      "title": "The Impact of Heartfulness Self-Care Program on Anxiety, Satisfaction With Life, and Loneliness Levels in Students and Staff in High Schools.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anxiety",
        "Satisfaction With Life",
        "Loneliness"
      ],
      "interventions": [
        {
          "name": "Self-Care Program through Heartfulness",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Heartfulness Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "14 Years to 80 Years"
      },
      "enrollment_count": 203,
      "start_date": "2022-02-03",
      "completion_date": "2022-07-03",
      "has_results": false,
      "last_update_posted_date": "2023-05-24",
      "last_synced_at": "2026-09-13T01:30:25.640Z",
      "location_count": 1,
      "location_summary": "Novi, Michigan",
      "locations": [
        {
          "city": "Novi",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05874232"
    },
    {
      "nct_id": "NCT02334202",
      "title": "Preventing Obesity in Military Communities, Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Weight Gain",
        "Disordered Eating",
        "Eating Disorder"
      ],
      "interventions": [
        {
          "name": "Interpersonal Psychotherapy-Weight Gain",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Education",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Henry M. Jackson Foundation for the Advancement of Military Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "17 Years",
        "sex": "FEMALE",
        "summary": "12 Years to 17 Years · Female only"
      },
      "enrollment_count": 48,
      "start_date": "2011-11",
      "completion_date": "2018-08",
      "has_results": false,
      "last_update_posted_date": "2018-08-03",
      "last_synced_at": "2026-09-13T01:30:25.640Z",
      "location_count": 1,
      "location_summary": "Fort Belvoir, Virginia",
      "locations": [
        {
          "city": "Fort Belvoir",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02334202"
    },
    {
      "nct_id": "NCT03964181",
      "title": "Changing School Start Times: Impact on Student, Family, Teacher, and Community Health",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep"
      ],
      "interventions": [
        {
          "name": "Change in school start times",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Jewish Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "8 Years and older"
      },
      "enrollment_count": 118000,
      "start_date": "2017-04-11",
      "completion_date": "2021-07-31",
      "has_results": false,
      "last_update_posted_date": "2022-09-29",
      "last_synced_at": "2026-09-13T01:30:25.640Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03964181"
    }
  ]
}