** Recipient of the 2017 Kenneth Rothman Prize from EPIDEMIOLOGY.
e used GIS-assisted (geographic information system) activity path interviews and mapped data of the urban landscape to investigate how situations young people encounter and the places they go over their daily activities relate to the likelihood of violence. The study subjects were 10-24 year-olds in Philadelphia, Pennsylvania. We enrolled 143 assault patients who had been shot with a firearm and 206 assault patients injured with other types of weapons from hospital emergency departments and 283 controls from the community. During an interview, each subject reported a step-by-step mapped record of how, when, where, and with whom they spent time over the course of a full day from making up until going to bed or getting assaulted. We linked each point of each path according to its location and time (space-time) to 27 cartographic map layers of physical and social features of the Philadelphia landscape as well as hourly climate data. This detailed set of data on activity paths and the context of each situation and environment that each subject encountered provides novel opportunities to learn about young peoples’ activities and risks for violence in the urban landscape. Several papers have reported the methods, sample characteristics, and results about daily activities, exposure levels, and risks for assaults. Additional manuscripts led by several post doctoral fellows and doctoral students are underway. R01AA014944, K02AA017974.
**Wiebe DJ, Richmond TS, Guo W, Allison PD, Hollander JE, Nance ML, Branas CC. Mapping activity patterns to quantify risk of violent assault in urban environments. Epidemiology 2016;27(1):32-41.
Kondo MC, South EC, Branas CC, Richmond TS, Wiebe DJ. The association between urban tree cover and gun assault: a case-control and case-crossover study. American Journal of Epidemiology 2017;186(3)289–96.
Culyba AJ, Guo W, Branas CC, Miller E, Wiebe DJ. Comparing residence-based to actual path-based methods for defining adolescents’ environmental exposures using granular spatial data. Health & Place 2018;49;39-49.
Wiebe DJ, Guo W, Allison PD, Anderson E, Richmond TS, Branas CC. Fears of violence during morning travel to school. J Adolesc Health 2013;53:54-61.
Basta LA, Richmond TS, Wiebe DJ. Neighborhoods, daily activities, and measuring health risks experienced in urban environments. Soc Sci Med 2010;71(11):1943-50.
Wiebe DJ. Stress associated with public health field research. Am J Public Health 2010;100(12):2332-3.