{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?page=2&sponsor=Mathematica+Policy+Research%2C+Inc.",
    "query": {
      "sponsor": "Mathematica Policy Research, Inc.",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 55,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?page=3&sponsor=Mathematica+Policy+Research%2C+Inc.&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?page=1&sponsor=Mathematica+Policy+Research%2C+Inc.&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-04T10:54:28.862Z",
  "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": "NCT06617533",
      "title": "Evaluation of the Primary Care First Model",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "All Conditions"
      ],
      "interventions": [
        {
          "name": "PCF model",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 25000000,
      "start_date": "2021-01-01",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-09-27",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 1,
      "location_summary": "Princeton, New Jersey",
      "locations": [
        {
          "city": "Princeton",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06617533"
    },
    {
      "nct_id": "NCT02902003",
      "title": "Testing Relationship Skills Education Services With a Robust Economic Security Component",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Family Relations"
      ],
      "interventions": [
        {
          "name": "Empowering Families",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1758,
      "start_date": "2016-09",
      "completion_date": "2021-12",
      "has_results": false,
      "last_update_posted_date": "2022-04-22",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 1,
      "location_summary": "Fort Worth, Texas",
      "locations": [
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02902003"
    },
    {
      "nct_id": "NCT05219045",
      "title": "Ohio RETAIN Impact Evaluation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Disability"
      ],
      "interventions": [
        {
          "name": "Ohio RETAIN",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 4525,
      "start_date": "2022-01-19",
      "completion_date": "2026-02-28",
      "has_results": false,
      "last_update_posted_date": "2026-03-06",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05219045"
    },
    {
      "nct_id": "NCT02069782",
      "title": "Mother and Infant Home Visiting Program Evaluation",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy",
        "Infant Development"
      ],
      "interventions": [
        {
          "name": "Home visiting",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "MDRC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "15 Years and older · Female only"
      },
      "enrollment_count": 4232,
      "start_date": "2012-10",
      "completion_date": "2027-09",
      "has_results": false,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02069782"
    },
    {
      "nct_id": "NCT05146349",
      "title": "Minnesota RETAIN Impact Evaluation",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Any Injury or Illness Acutely Impacting Work"
      ],
      "interventions": [
        {
          "name": "Minnesota RETAIN",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3200,
      "start_date": "2021-12-23",
      "completion_date": "2026-02-28",
      "has_results": false,
      "last_update_posted_date": "2022-01-24",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05146349"
    },
    {
      "nct_id": "NCT04146974",
      "title": "Assessing Models of Coordinated Services for Low-Income Children and Their Families",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Child Development",
        "Family and Household"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 416,
      "start_date": "2019-10",
      "completion_date": "2021-08",
      "has_results": false,
      "last_update_posted_date": "2019-10-31",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "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/NCT04146974"
    },
    {
      "nct_id": "NCT05258994",
      "title": "Early Care and Education Leadership Study: Descriptive Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Leadership in Early Care and Education Centers"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1164,
      "start_date": "2022-03-04",
      "completion_date": "2023-09-15",
      "has_results": false,
      "last_update_posted_date": "2023-09-18",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "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/NCT05258994"
    },
    {
      "nct_id": "NCT06611982",
      "title": "Guaranteed Income and Financial Treatment",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer",
        "Financial Hardship",
        "Quality of Life"
      ],
      "interventions": [
        {
          "name": "Unconditional cash transfer",
          "type": "OTHER"
        },
        {
          "name": "Contact information for social worker and financial counselor",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Meredith Doherty, PhD, LCSW",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 250,
      "start_date": "2023-04-01",
      "completion_date": "2026-07-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-25",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 3,
      "location_summary": "Philadelphia, New York • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06611982"
    },
    {
      "nct_id": "NCT05146362",
      "title": "Vermont RETAIN Impact Evaluation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Disability"
      ],
      "interventions": [
        {
          "name": "Vermont RETAIN",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 798,
      "start_date": "2022-02-01",
      "completion_date": "2026-02-28",
      "has_results": false,
      "last_update_posted_date": "2026-03-06",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 1,
      "location_summary": "Lebanon, New Hampshire",
      "locations": [
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05146362"
    },
    {
      "nct_id": "NCT01565304",
      "title": "Evaluation of the Effectiveness of the POWER Through Choices Program",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy",
        "Sexually Transmitted Infections"
      ],
      "interventions": [
        {
          "name": "POWER Through Choices",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mathematica Policy Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "13 Years to 18 Years"
      },
      "enrollment_count": 1039,
      "start_date": "2012-01",
      "completion_date": "2015-07",
      "has_results": false,
      "last_update_posted_date": "2015-09-23",
      "last_synced_at": "2026-10-04T10:54:28.862Z",
      "location_count": 3,
      "location_summary": "Bakersfield, California • Baltimore, Maryland • Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01565304"
    }
  ]
}