We examine optimal time of day and day of week for conducting random digit dial (RDD) surveys in low- and middle-income countries (LMICs). Different types of survey respondents have competing time demands that influence when they are likely to be able and willing to answer the phone and complete...

Response rates remain low in phone surveys compared to face-to-face data collection (see here for a similar brief on response rates). This is especially true for random digit dial (RDD) or similar “cold call” phone surveys, which are necessary in the absence of a sample frame of reliable...

This research methods brief presents data from random digit dial (RDD) surveys in nine countries. We show that response rates to such surveys are typically below 60 percent and can be as low as 7 percent. We also show that most of the sample is lost at two points in the survey: non-contact,...