Outcomes
SECONDARY
Vaccine willingness was measured using a 4-point Likert scale within the survey distributed within the Dutch newspaper and Facebook group, and a dichotomous scale was used within the survey distributed within the Indian radio station group. The 4-point Likert scale answers were recoded into a dichotomous scale to match with the scale used in the survey distributed within the Indian radio station group, e.g. strongly disagree and disagree were recoded into disagree; agree and strongly agree were recoded into agree. Only the dichotomous scale was used in the statistical analysis. Ordinal data was collected through 3, 4 or 5-point Likert scales. These scales were subsequently converted into numerical values (e.g. 1, 2 and 3). Question 5 regarding migration background was recoded into a binary variable, as 1 for migrant and 2 for non-migrant. Question 6 regarding education level of the participant, was recoded into a binary variable, as 0 for lower education i.e. less than high school diploma, pre-vocational secondary education and secondary vocational education, and 1 for higher education for all remaining levels of education.