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ClinicalTrials.gov public records Last synced May 22, 2026, 2:44 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–8 of 8 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Head Start Participation Clear all
Completed No phase listed Observational
View directory record Official record
Conditions
Head Start Participation
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
2 Years and older
Enrollment
560 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 21, 2024 · Synced May 22, 2026, 2:44 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Head Start Participation
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
2 Years and older
Enrollment
4,825 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 21, 2024 · Synced May 22, 2026, 2:44 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Early Intervention, Educational (Head Start and Early Head Start Access and Participation)
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
174 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Dec 5, 2021 · Synced May 22, 2026, 2:44 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Head Start Participation
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
3 Years and older
Enrollment
5,193 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 25, 2019 · Synced May 22, 2026, 2:44 AM EDT
Not listed No phase listed Observational
View directory record Official record
Conditions
Early Head Start Participation
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
Up to 4 Years
Enrollment
6,723 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated May 23, 2021 · Synced May 22, 2026, 2:44 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Head Start Participation
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
2 Years and older
Enrollment
1,587 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 1, 2024 · Synced May 22, 2026, 2:44 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Head Start Participation
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
2 Years and older
Enrollment
5,593 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 23, 2024 · Synced May 22, 2026, 2:44 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Head Start Participation
Interventions
Not listed
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
3 Years and older
Enrollment
1,194 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 7, 2019 · Synced May 22, 2026, 2:44 AM EDT