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The most effective approach to minimizing non-response bias is to proactively reduce the number of non-responders by maximizing the survey's overall response rate. Although statistical techniques exist to correct for non-response bias after data collection, these corrections rely on assumptions about the non-participating individuals that might be entirely incorrect, making prevention the superior strategy.

Minimizing Non-response Bias

Survey participation is influenced by various methodological choices. The mode of administration is a primary factor, with in-person interviews generally achieving the highest response rates, followed by telephone, mail, and online surveys. Additional strategies to boost participation include sending advance notifications, issuing follow-up reminders to non-responders, minimizing the questionnaire's length and complexity, and offering non-coercive incentives.

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