356 to 1
Via Gotham Gazette:
Between October and December 2011, 26 pedestrians were injured in crashes with bicyclists; six bicyclists were injured in those incidents, according to DOT data from June obtained by Transportation Alternatives. In the same period of time, 4,336 bicyclists and pedestrians were injured by drivers. That means that, for every 356 injuries caused by car crashes, one pedestrian or bicyclist was injured in a bicycle-pedestrian crash.
But the DOT statistics also show the number of New York cyclists quadrupled over the last decade. During that time, the rate of risk to cyclists was down by 75 percent.