So according to that study you would be 40 times as safe cycling on the road compared to the sidewalk if your town had bicycle facilities on the road but since they don't you'd only be about 20 times as safe. Still doesn't explain why you'd choose to ride on the sidewalk and expose yourself to 20 times as much risk. [The study analysis showed a 'relative danger index' of between 0.66 and 1.00 for streets *without* any bicycle facility vs. 16 for sidewalks, so the risk was from 16 - 24 times as great on sidewalks.]

You indicated before that you ride on the sidewalk at about 10 mph unless there are nearby pedestrians (which is rarely the case). 10 mph is much faster than people walking and faster than almost all joggers. In my experience, drivers pulling out of or into driveways are not expecting to encounter sidewalk traffic moving at that speed and tend not to look far enough to the side to spot it in time. So you run the risk of someone having glanced at the sidewalk, not spotted you and then accelerating just as you appear in front of their bumper because their attention is now focused on traffic on the road.