DURHAM, N.C. (WTVD) -- A Duke University study, conducted over a four-year period shines a light on disparities in the way officers with the Durham Police Department (DPD) respond to deadly or non-deadly shootings. The study points out that while deadly and non-deadly shootings were similar in many respects, including the characteristics of victims, police investigations of non-deadly shootings resulted in an arrest in only 16% of cases, compared to 46% of shootings where someone was killed. Researchers also examined court data to assess the outcome of shooting cases after an arrest was made and found that 89% of fatal shootings and 70% of non-fatal shootings resulted in prosecution.