The number of delayed police responses cited by Minneapolis police officials to underscore staffing shortages was less than a fifth of the actual tally.
The revised count comes after officials determined that they had overlooked thousands of cases in which people called 911 to report a shooting or domestic assault and no police units were available to respond, said Minneapolis city coordinator Nuria Rivera-Vandermyde.
"It's not that the data was wrong, it's that the data was limited," she said in an interview this week. "I'm a firm believer that data is data, and we need to be as transparent as we can."
The confusion started last week when Police Chief Medaria Arradondo told the City Council committee that oversees public safety that over a 12-month period dating back to last summer there were 1,251 instances in which no squads were immediately available to respond to Priority 1 calls. It turns out the actual number more than five times larger, officials now say: 6,776.
Because of the way the way that some of the calls were coded, many were missed when the department first queried the city's 911 records, said Rivera-Vandermyde, an oversight that didn't become apparent until a subsequent data pull retrieved thousands of additional calls.
The newly released department data show that the number of delayed-response calls decreased about 5%, from 7,188 over the previous 12 months. Other calls where police responses took longer than expected also numbered in the thousands, the data show.
What the data don't detail is how long each call was pending before police arrived or whether other squad cars were tied up by another serious emergency in a different part of town.
Dispatchers determine whether a call is a high priority, depending on the alleged crime's severity — ranging from a Priority 0, for cases where there exists an imminent danger to life, to a Priority 4 — which will determine how quickly police will respond. Calls are put into a queue awaiting an available officer; but if none are free to respond within an allotted time, dispatchers are required to notify a supervisor. For Priority 1 emergencies, police are supposed to start toward the scene within 70 seconds of the initial 911 call.