A 2016 study by economist Roland G. Fryer, Jr. of the National Bureau of Economic Research, updated in 2018, found that while overall "blacks are 21 percent more likely than whites to be involved in an interaction with police in which at least a weapon is drawn" and that in the raw data from New York City's Stop and Frisk program "blacks and Hispanics are more than fifty percent more likely to have an interaction with police which involves any use of force" after "the data in myriad ways, we find no evidence of racial discrimination in officer-involved shootings." The study did find bias against blacks and Hispanics in non-lethal and less-extreme lethal violence, stating that "as the intensity of force increases (e.g. handcuffing civilians without arrest, drawing or pointing a weapon, or using pepper spray or a baton), the probability that any civilian is subjected to such treatment is small, but the racial difference remains surprisingly constant", and noted that "[until recently, data on officer-involved shootings were extremely rare and contained little information on the details surrounding an incident".