Beidi Dong1, Christopher N Morrison2, Charles C Branas2, Therese S Richmond3, Douglas J Wiebe4. 1. Department of Criminology, Law and Society, George Mason University, 354 Enterprise Hall, 4400 University Drive, MS 4F4, Fairfax, VA 22030. 2. Department of Epidemiology, Columbia University, New York, NY 10032. 3. Department of Biobehavioral Health Sciences, University of Pennsylvania, Philadelphia, PA 19104. 4. Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA 19104.
Abstract
OBJECTIVES: This study clarifies three important issues regarding situational or opportunity theories of victimization: 1) whether engaging in risk activities triggers violent assault during specific, often fleeting moments, 2) how environmental settings along individuals' daily paths affect their risk of violent assault, and 3) whether situational triggers have differential effects on violent assault during the day versus night. METHODS: Using an innovative GIS-assisted interview technique, 298 young male violent assault victims in Philadelphia, PA described their activity paths over the course of the day of being assaulted. Case-crossover analyses compared each subject's exposure status at the time of assault with his own statuses earlier in the day (stratified by daytime and nighttime). RESULTS: Being at an outdoor/public space, conducting unstructured activities, and absence of guardians increase the likelihood of violent victimization at a fine spatial-temporal scale at both daytime and nighttime. Yet, the presence of friends and environmental characteristics have differential effects on violent victimization at daytime versus nighttime. Moreover, individual risk activities appeared to exhibit better predictive performance than did environmental characteristics in our space-time situational analyses. CONCLUSIONS: This study demonstrates the value of documenting how individuals navigate their daily activity space, and ultimately advances our understanding of youth violence from a real-time, real-life standpoint.
OBJECTIVES: This study clarifies three important issues regarding situational or opportunity theories of victimization: 1) whether engaging in risk activities triggers violent assault during specific, often fleeting moments, 2) how environmental settings along individuals' daily paths affect their risk of violent assault, and 3) whether situational triggers have differential effects on violent assault during the day versus night. METHODS: Using an innovative GIS-assisted interview technique, 298 young male violent assault victims in Philadelphia, PA described their activity paths over the course of the day of being assaulted. Case-crossover analyses compared each subject's exposure status at the time of assault with his own statuses earlier in the day (stratified by daytime and nighttime). RESULTS: Being at an outdoor/public space, conducting unstructured activities, and absence of guardians increase the likelihood of violent victimization at a fine spatial-temporal scale at both daytime and nighttime. Yet, the presence of friends and environmental characteristics have differential effects on violent victimization at daytime versus nighttime. Moreover, individual risk activities appeared to exhibit better predictive performance than did environmental characteristics in our space-time situational analyses. CONCLUSIONS: This study demonstrates the value of documenting how individuals navigate their daily activity space, and ultimately advances our understanding of youth violence from a real-time, real-life standpoint.
Authors: Beidi Dong; Charles C Branas; Therese S Richmond; Christopher N Morrison; Douglas J Wiebe Journal: J Adolesc Health Date: 2017-09-22 Impact factor: 5.012
Authors: Douglas J Wiebe; Wensheng Guo; Paul D Allison; Elijah Anderson; Therese S Richmond; Charles C Branas Journal: J Adolesc Health Date: 2013-04-12 Impact factor: 5.012
Authors: Alison J Culyba; Wensheng Guo; Charles C Branas; Elizabeth Miller; Douglas J Wiebe Journal: Health Place Date: 2017-12-01 Impact factor: 4.078