# NIH Reporter #1R01CE003795-01

A quasi-experimental field study of community-based litter and trash interventions to reduce violence

**Recipient:** Columbia University Health Sciences

**Award Amount:** $649,654.00
**Ceiling:** $649,654.00

**Awarded:** September 10, 2026

**Identifier:** 1R01CE003795-01

Columbia University Health Sciences received NIH funding for a study of whether community-based street-cleaning interventions can reduce violence and improve health and safety in Philadelphia neighborhoods.

### Description

A quasi-experimental field study evaluating a community-initiated litter, trash, and illegal-dumping abatement program in Philadelphia. The study compares treated blocks, matched wait-list control blocks, and randomly selected control blocks to assess effects on violence, nuisances, perceptions of safety, and workforce health.

[View original record](https://reporter.nih.gov/search/47CiHD0bJ0u2LtDABS0zbg/project-details/11239287)