= Response Rates = <> ---- == Description == ---- == Calculation == The predominant formulas for response rates come from AAPOR. '''Response Rate 1''' ('''RR1''') is a simple rate of complete interviews (`I`) over all other types of ''presumed'' eligible cases: partial interviews (`P`), refusals (`R`), non-contacts (`NC`), others (`O`, a catch-all category for types of non-response that aren't necessarily a 'refusal'), and cases with unknown eligibility (`UNK`). {{attachment:rr1.svg}} RR1 is functionally an underestimate, because we expect some number of cases with unknown eligibility to actually be ineligible. This sets up '''Response Rate 3''' ('''RR3'''), which incorporates an estimate of `e`, the eligibility rate among those unknown cases. {{attachment:rr3.svg}} A common method for estimating `e` comes from CASRO: proportional allocation of cases with unknown eligibility according to those with known eligiblity. Adapting the above notation, and noting that ineligible cases are represented by `IN`, this is calculated as: {{attachment:casro.svg}} A response rate's calculation largely flows from the determination of [[SurveyStatistics/Dispositions|case dispositions]]. In any survey, there is an unclear distinction between a partial interview and a refusal. Many surveys ''furthermore'' allow questions to be implicitly skipped, explicitly refused, or include a 'Prefer not to answer' option. It becomes unclear what distinction functionally exists between complete interviews, partial interviews, and refusals. ---- CategoryRicottone