FIG. 3. Respondents to the survey by (a) their country of residence and (b) their country of birth (a) (b) Country of birth  >– 1000 respondents  500-999 respondents  100-499 respondents  < 100 respondents  No respondents or not applicable Note: (a) data from 23 739 respondents from WHO Member States and 1189 from other territories residing in 170 countries or territories; (b) data from 18 412 respondents from WHO Member States and 945 from other territories by country of birth among 159 countries or territories. FIG. 4. Distribution of educational background for respondents 3.6% 6.7% 28.8% 61.0%  No schooling    Primary education    Secondary education    Higher education Note: data from 22 618 respondents for education (806 no schooling, 1521 primary education, 6504 secondary education, 13 787 higher education). Sociodemographic characteristics | 9