Appointments:reviews ratio

Although I know this can vary widely I have occasionally wondered what the ratio of appointments-to-reviews is for providers, even an average. 150%? 200%? 250%? 300%? I don't have a clue but would guess somewhere between 150-250% although there are so many variables that could run that ratio all over the place.

Mods, please remove as this is to be posted in the Coed section.