Efficiency measure Calculation formula
Time efficiency 1: Time spent for recruitment attempts \(\frac{\text{total recruit time}}{\text{total # of calls}}\)
Time efficiency 2a: Time spent contacting and screening recruits (screener was completed) \(\frac{\text{Contact and screen time on complete screener cases}}{\text{total # of complete screeners}}\)
Time efficiency 2b: Time spent contacting and screening recruits (screener was not completed) \(\frac{\text{Contact and screen time on incomplete screener cases}}{\text{total # of complete screeners}}\)
Outreach capacity \(\frac{\text{total # of calls}}{\text{total # of recruitment attempts}}\)
Eligibility rate \(\frac{\text{total # of monolingual Rs}}{\text{total # of people screened}}\)