The new IP for a long-term care facility is assessing adherence to the facility's hand hygiene policies. Which of the following should he include when reporting his findings?
a. The number of hand hygiene episodes performed by personnel divided by the volume of soap used in the facility
b. The number of hand hygiene episodes performed by personnel divided by the number of patient days times 1,000
c. The number of hand hygiene episodes performed by personnel divided by the volume of alcohol-based hand rub
d. The number of hand hygiene episodes performed by personnel divided by the number of hand hygiene opportunities by ward or service