Additional file 2 of Education-related inequalities in beliefs and behaviors pertaining to COVID-19 non-pharmaceutical interventions

Additional file 2: Supplementary Table 2. Education-related inequality in four COVID-19 prevention and testing indicators by country: crude and adjusted Slope Index of Inequality (SII) and Relative Index of Inequality (RII) (UMD-CTIS, June-Dec 2021). Education-related inequality in four COVID-19 prevention and testing indicators in 90 study countries from the UMD Global COVID-19 Trends and Impact Survey, June–December 2021. Education-related inequality is measured using the Slope Index of Inequality (SII) and Relative Index of Inequality (RII). The first adjusted model (Adjusted) controlled for individual sociodemographic characteristics (age, sex, place of residence, and household overcrowding). The second adjusted model (Adjusted2) controlled for these characteristics plus the presence of health risk factors and COVID-like symptoms.