Community-Centered SafetyNCT07494019
Community Safety and Violence
An observational study of Community-Centered Safety, run by NYU Langone Health at 1 site in United States.
Trial summary
This study will describe, estimate, and explore the effectiveness of community-centered safety models (CCSMs)-including co-response, alternative response, and community violence intervention modalities-implemented across U.S. municipalities to prevent community violence among youth and young adults (YYA). Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Community-Centered Safety
- How many people
- 15 participants
- Where
- 1 siteUnited States
- Study dates
- 30 Sep 2025to 29 Sep 2028
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: This protocol does not involve prospective enrollment or direct interaction with individuals. The "participants" in this study are: 1. Jurisdictions/sites (U.S. cities/counties) operating fully implemented community-centered safety models (CCSMs)-co-response, alternative response, or community violence intervention; and 2. Community populations within those jurisdictions, represented only through secondary, de-identified or limited administrative datasets (e.g., violent deaths, nonfatal injury encounters, crime/arrest records) used for population-level analyses. Youth and young adults (YYA; ~ages 10-34) are a focal analytic subgroup because they bear a disproportionate burden of community violence. No individuals are recruited, contacted, or intervened upon.
Who may be able to join
- Intervention modality clarity: A single, identifiable CCSM-Co-Response (CRM), Alternative Response (ARM), or Community Violence Intervention (CVI)-implemented at city/county level.
- Documented launch date \& scope: Public or official documentation specifying program start date, catchment, operating hours, staffing, eligibility, and core activities.
- Observation window: ≥24 months pre-implementation and ≥12 months post-implementation of outcome data (monthly preferred; annual acceptable for fatal outcomes).
- Outcomes coverage: Availability of primary outcomes (fatal and nonfatal violent injury) and at least one secondary justice outcome at the jurisdiction level.
- Data quality: Stable geographic boundaries, consistent reporting practices, and no catastrophic breaks that preclude credible counterfactual fit.
- Donor comparability: Jurisdiction characteristics and data cadence compatible with a pooled augmented synthetic control design (i.e., can be matched to a synthetic control and included in permutation tests).
Who cannot join
- Pilot-only or indeterminate programs: Short-lived pilots, ambiguous or multi-modality rollouts where treatment timing or content cannot be reliably defined.
- Severe data discontinuity: Major boundary changes, reporting suspensions, coding overhauls, or dataset gaps that undermine time-series integrity (e.g., prolonged outages during system migration) and cannot be addressed with standard remedies.
- Overlapping major interventions: Concurrent, poorly measured citywide initiatives (e.g., sweeping policy bundles) that coincide with the CCSM start and make identification infeasible.
- Insufficient pre-period: <24 months pre-implementation data for primary outcomes.
- Incompatible cadence/aggregation: Outcomes only available at spatial or temporal units that cannot be aligned with other sites or donors.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
NYU Langone Health
New York, New York, 10016
About this study
Official title: Estimating the Impact of Alternative Crisis Response Models on Community Violence
This study will describe, estimate, and explore the effectiveness of community-centered safety models (CCSMs)-including co-response, alternative response, and community violence intervention modalities-implemented across U.S. municipalities to prevent community violence among youth and young adults (YYA). Specifically, the investigators will (1) describe CCSM implementation using implementation-science methods, (2) estimate CCSMs' impacts on community-violence outcomes using quasi-experimental methods, and (3) explore operational and contextual factors associated with stronger or weaker effects.
- Conditions
- Community-Centered Safety
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| U.S. Cities/Counties | Approximately 15 U.S. cities/counties (≈5 per CCSM modality) selected for evaluability. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Homicide Rate
Measured as deaths per 100,000 (annual).
Measured: Baseline, Month 36
Firearm Homicide Rate
Measured as deaths per 100,000 (annual).
Measured: Baseline, Month 36
Assault-related ED & inpatient encounters (combined) rate
Measured as visits/admissions per 10,000 (monthly).
Measured: Baseline, Month 36
Firearm-assault-related ED & inpatient encounters (combined) rate
Measured as hospitalizations per 10,000 (monthly).
Measured: Baseline, Month 36
Nonfatal firearm assault rate
Measured as hospitalizations per 10,000 (monthly).
Measured: Baseline, Month 36
Secondary outcomes (4)
Aggravated assault arrest rate
Measured as arrests per 10,000 (monthly).
Measured: Baseline, Month 36
Weapons-related arrest rate
Measured as arrests per 10,000 (monthly).
Measured: Baseline, Month 36
Robbery arrest rate
Measured as arrests per 10,000 (monthly).
Measured: Baseline, Month 36
Juvenile arrest rate
Measured as arrests per 10,000 juveniles (monthly).
Measured: Baseline, Month 36
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Mar 2026
- Study start30 Sep 2025
- Primary completion29 Sep 2028 (estimated)
- Study completion29 Sep 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Community-Centered SafetyStudies of the same condition, open and under way.
- More trials run by NYU Langone HealthThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 15 participants (estimated)
Sponsor and investigators
- Lead sponsor
- NYU Langone Health
- Sponsor type
- University, hospital or other
- Collaborators
- Centers for Disease Control and Prevention
- Responsible party
- Sponsor
- Investigators
- Bennett Allen, PhD, Principal investigator, NYU Langone Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07494019
- Sponsor's protocol ID
- 25-01382
- Other IDs
- R01CE003770
- Status last verified
- Mar 2026
- First submitted
- 20 Mar 2026
- Last updated
- 27 Mar 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 27 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Estimating the Impact of Alternative Crisis Response Models on Community Violence
- ClinicalTrials.gov ID
- NCT07494019
- Acronym / sponsor ID
- 25-01382
- Conditions
- Community-Centered Safety
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 15 participants (estimated)
- Lead sponsor
- NYU Langone HealthUniversity, hospital or other
- Collaborators
- Centers for Disease Control and Prevention
- Study start
- 30 Sep 2025 (actual)
- Primary completion
- 29 Sep 2028 (estimated)
- Study completion
- 29 Sep 2028 (estimated)
- First posted
- 27 Mar 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will describe, estimate, and explore the effectiveness of community-centered safety models (CCSMs)-including co-response, alternative response, and community violence intervention modalities-implemented across U.S. municipalities to prevent community violence among youth and young adults (YYA). Specifically, the investigators will (1) describe CCSM implementation using implementation-science methods, (2) estimate CCSMs' impacts on community-violence outcomes using quasi-experimental methods, and (3) explore operational and contextual factors associated with stronger or weaker effects.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| U.S. Cities/Counties | – | –Approximately 15 U.S. cities/counties (≈5 per CCSM modality) selected for evaluability. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- This protocol does not involve prospective enrollment or direct interaction with individuals. The "participants" in this study are: 1. Jurisdictions/sites (U.S. cities/counties) operating fully implemented community-centered safety models (CCSMs)-co-response, alternative response, or community violence intervention; and 2. Community populations within those jurisdictions, represented only through secondary, de-identified or limited administrative datasets (e.g., violent deaths, nonfatal injury encounters, crime/arrest records) used for population-level analyses. Youth and young adults (YYA; ~ages 10-34) are a focal analytic subgroup because they bear a disproportionate burden of community violence. No individuals are recruited, contacted, or intervened upon.
Key inclusion criteria (6 listed)
- Intervention modality clarity: A single, identifiable CCSM-Co-Response (CRM), Alternative Response (ARM), or Community Violence Intervention (CVI)-implemented at city/county level.
- Documented launch date \& scope: Public or official documentation specifying program start date, catchment, operating hours, staffing, eligibility, and core activities.
- Observation window: ≥24 months pre-implementation and ≥12 months post-implementation of outcome data (monthly preferred; annual acceptable for fatal outcomes).
- Outcomes coverage: Availability of primary outcomes (fatal and nonfatal violent injury) and at least one secondary justice outcome at the jurisdiction level.
- Data quality: Stable geographic boundaries, consistent reporting practices, and no catastrophic breaks that preclude credible counterfactual fit.
Key exclusion criteria (5 listed)
- Pilot-only or indeterminate programs: Short-lived pilots, ambiguous or multi-modality rollouts where treatment timing or content cannot be reliably defined.
- Severe data discontinuity: Major boundary changes, reporting suspensions, coding overhauls, or dataset gaps that undermine time-series integrity (e.g., prolonged outages during system migration) and cannot be addressed with standard remedies.
- Overlapping major interventions: Concurrent, poorly measured citywide initiatives (e.g., sweeping policy bundles) that coincide with the CCSM start and make identification infeasible.
- Insufficient pre-period: <24 months pre-implementation data for primary outcomes.
- Incompatible cadence/aggregation: Outcomes only available at spatial or temporal units that cannot be aligned with other sites or donors.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Homicide Rate
Time frame: Baseline, Month 36
Measured as deaths per 100,000 (annual).
Firearm Homicide Rate
Time frame: Baseline, Month 36
Measured as deaths per 100,000 (annual).
Assault-related ED & inpatient encounters (combined) rate
Time frame: Baseline, Month 36
Measured as visits/admissions per 10,000 (monthly).
Firearm-assault-related ED & inpatient encounters (combined) rate
Time frame: Baseline, Month 36
Measured as hospitalizations per 10,000 (monthly).
Nonfatal firearm assault rate
Time frame: Baseline, Month 36
Measured as hospitalizations per 10,000 (monthly).
4 secondary outcomes
Aggravated assault arrest rate
Time frame: Baseline, Month 36
Weapons-related arrest rate
Time frame: Baseline, Month 36
Robbery arrest rate
Time frame: Baseline, Month 36
Juvenile arrest rate
Time frame: Baseline, Month 36
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Mar 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Bennett Allen, PhD principal investigator
NYU Langone Health
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Community-Centered Safety, run by NYU Langone Health at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 27 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Bennett Allen, PhD (646- 501-3708, Bennett.Allen@nyulangone.org), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Homicide Rate (time frame: Baseline, Month 36). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Mar 2026.