Previous studies suggest that refusals form the largest proportion of nonresponse for household surveys. As face-to-face household health surveys are uncommon in several countries, it might be advantageous for prospective surveys to preemptively tackle respondents' refusal to survey participation. Using contact history data from the Saudi National…

In some survey research settings, it may be not attainable or optimal to interview individual respondents without involving bystanders or third parties in the interview. Due to complex living circumstances or group culture, respondents may be helped by others in answering questions. However, this involvement of third parties raises questions about…