What are Recruiting Metrics?

Recruiting metrics is a term used to refer to those measures an agency uses to determine hiring success and is a means of improving the hiring process. Metrics can includes a wide range including the folllowing:
Time to Fill
Offer acceptance rate
Hire to goal
quality of hire
cost per hire
diversity hiring metrics
retention rates
client calls
client meetings
new roles
total roles
active candidates
recruiter/candidate interviews
CVs submitted
first client interviews
second client interviews
Qualified candidates per post
sourcing channel efficiency
adverse impact
candidate experience
number of interviews per candidate