Not really. There are a number of places (ATL for instance) where residential sprinklers have been mandated since at least the 80s. For certain things (high-rises, nursing homes, hospitals and other places where the fire strategy is "defend in place" we have numbers from the early 1900s. All of the studies show (1) less damage- water, fire and smoke (2) NO-- as in not a single) multiple fatality fires (3) fires are kept small and often put out before the FD gets there (4). only the head(s) closest to the fire are set off and (5). the chances of accidental discharge a vanishingly small (and usually secondary to bad installation instead of the head itself). The question that is really at the center is the risk/benefit analysis comparing savings with costs of installation and upkeep. That I don't have a good answer for.