...health and demographic data on young men between the ages of 15 and 34; among the data presented and discussed is population size by race / ethnicity and neighborhood, sexually transmitted diseases, leading causes of hospitalization, violent injury, leading causes of deaths (mortality), homicide mortality, HIV / AIDS mortality, suicide mortality, substance abuse mortality, heart disease mortality, access to health care, condom use, smoking, alcohol consumption, gun and stabbing injuries by neighborhood, etc....