FIGURE 1.

Dialing outcomes–phone number states and probabilities. A phone number could be in one of the following three states: (1) a phone number with an Arab adult eligible for the survey; (2) an ineligible person; or (3) no‐response. p ₁ is the probability of a response; (1‐p ₁) is the probability of non‐response; p ₂ is the probability of being eligible conditional on response; similarly (1‐p ₂) is the conditional probability of being eligible and p ₁ (1–p₂) is the probability for being ineligible.