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Vacant Lot Greening and Violence-Related Outcomes

A Pilot Randomized Controlled Trial of Vacant Lot Greening and Violence-related Outcomes

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01336374
Enrollment
29
Registered
2011-04-15
Start date
2011-04-30
Completion date
2011-09-30
Last updated
2011-12-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Built Environment, Violence Prevention

Brief summary

The purpose of this study is to determine the impact of vacant lot greening on perceptions of safety and violence for residents living around the lots. We hypothesize that people living around lots that are greened will have improved perception of safety.

Detailed description

Violence is a serious health problem in the US, and especially in Philadelphia, as the city ranks first in violent crime amongst the ten largest US cities. The determinants of violent crime range from individual to community level factors. In this study, we focus on physical incivilities in the built environment, specifically vacant lots, as they have been associated with violent crime. Physical incivilities are also associated with individual perceptions of crime and safety, and subsequently, negative health outcomes. However, prior research has been observational and retrospective. We aim to expand this body of work through a randomized community intervention trial of vacant lot greening to explore causal mechanisms between vacant lots and violent crime outcomes. This pilot study, in partnership with the Pennsylvania Horticultural Society, will investigate the feasibility of a vacant lot greening intervention, and explore how vacant lot greening changes resident perception about violence, fear, stress, and neighborhood disorder, as well as violent crime in the surrounding area. We will interview residents living around the greened and non-greened lots during a joint walk around a pre-determined route, which will ensure exposure to our intervention. We will also use violent crime data (homicide, aggravated assault, robbery, and rape) from the Philadelphia Police Department. Results of this pilot trial will be used to develop a full scale vacant lot greening grant to be submitted to the National Institutes of Health or the National Institute of Justice.

Interventions

None listed

Sponsors

University of Pennsylvania
Lead SponsorOTHER

Study design

Observational model
ECOLOGIC_OR_COMMUNITY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Age 18-65 * Lives in home * Ability to walk unassisted and without difficulty for 10 blocks

Exclusion criteria

* One resident per house

Design outcomes

Primary

MeasureTime frameDescription
Perceptions of safety and violencemeasured twice - once during first month of study and once during 4th or 5th month.We will be performing qualitative interviews to assess perceptions of safety and violence. We will compare these perceptions over time between two groups.

Secondary

MeasureTime frameDescription
Heart Ratemeasured twice - once during first month of study and once during 4th or 5th month of studyParticipants wear a heart rate monitor during a walk around their neighborhood.
Violent crime statisticsMeasured 6 months before intervention and 6 months after interventionWe will obtain crime statistics, including homicide, robbery, rape, and assault in the area around each cluster of vacant lots.
Safe/Unsafe items in the environmentmeasured twice - once during the first month of the study and once during the 4th or 5th month.During a walk around the neighborhood, participants will point out items in the environment which they feel are safe or unsafe.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026