"Do you see what I see?" - correlates of multidimensional measures of neighborhood types and perceived physical activity-related neighborhood barriers and facilitators for urban youth.

Objectives: To classify types of neighborhood environment and to examine the gender-specific cross-sectional associations between these neighborhood types and adolescents' perceptions of physical activity-related neighborhood barriers and facilitators.

Methods: This cross-sectional study was conducted with a sample of 350 high school students in Baltimore, Maryland, in 2006. Participants completed the Neighborhood Environment Walkability Scale (NEWS).