An Analysis of 911-Initiated Calls for Service

Because the officer-initiated call type is the most frequent origin for a call, the most frequent incident types in this group differ somewhat from the most frequent incident types shown in the subset of emergency calls (detailed in the following section). [...] Note: The percentages in the priority level columns are based on the number of calls for the call type by priority level, and the denominator is total calls for that priority level. [...] The percentage in the total calls row is the total number of calls for that priority level out of the total number of all mental health or other crisis situation calls (N=5,850). [...] This also aligns with the most frequent incident types in priority level three, which is also the most frequent priority categorization among emergency calls for service.4 4 The frequency of priority calls within neighborhoods also aligned with what we found overall in the data – most calls were classified as priority level three, followed by priority level four, priority level two, and priority l. [...] For example, if a call starts as a priority four because of a barking dog, but, then the officer arrives on the scene to find the dog is barking because a robbery occurred, the final code and priority level in the data may be the robbery and thus, we may not know that the original call was for a barking dog.