Fig. 1From: Revisiting the continuum of resistance model in the digital age: a comparison of early and delayed respondents to the Norwegian counties public health surveyNumber of questionnaire responses on each the day of the survey and in each response waves: Wave 1 (0–7 days from the initial questionnaire distribution), Wave 2 (8–14 days) and Wave 3 (15–45 days). Reminders to complete the questionnaire were distributed on days 8 and 15. Had the survey not used a second reminder, it is likely that many respondents of the third wave would have remained non-respondentsBack to article page