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Recruiting NCT07494019

Community Safety and Violence

— Observational Community-Centered Safety

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
This is an observational study: the protocol does not assign a study treatment.
Who it may be relevant to
Registry conditions: Community-Centered Safety. Basic parameters: No limits · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
United States
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Official title

Estimating the Impact of Alternative Crisis Response Models on Community Violence

Overview

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.

Primary outcome measures

  • Homicide Rate [Time frame: Baseline, Month 36]
  • Firearm Homicide Rate [Time frame: Baseline, Month 36]
  • Assault-related ED & inpatient encounters (combined) rate [Time frame: Baseline, Month 36]
  • Firearm-assault-related ED & inpatient encounters (combined) rate [Time frame: Baseline, Month 36]
  • Nonfatal firearm assault rate [Time frame: Baseline, Month 36]
Secondary outcome measures (4)
  • 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]

Eligibility criteria

Inclusion Criteria for Jurisdiction/Sites:

  • 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).

Exclusion criteria

  • 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.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Observational model
Other

Study locations

United States · 1 center
  • NYU Langone Health — New York

Identifiers

NCT: NCT07494019 · 25-01382 · R01CE003770

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗