Differences after stratification for education level
Participants with a low education level had initial VI scores lower than those with higher education, in both the MI (8.0 vs 8.5/10) and control (8.4 vs 8.8/10) groups. In the MI group, VI increased by 11.1% among participants with low education levels (p = 0.0002) and by 6.8% in those with a high education level (p = 0.001) (Changes in vaccination intention scores by intervention group and education level, south-eastern France, November 2021–April 2022 (n = 708D-I-D: difference-in-difference; MI: motivational interview; VH: vaccine hesitancy.
Vaccination intention scores were estimated with their 95% confidence intervals in the D-I-D model, at T0 and T1, by group (MI or control) and education level (≤ high school: respectively n = 139 in MI and 121 in control group; at least some post-secondary education: n = 213 and 235). Among participants with less education, for example, vaccination intention scores in the MI group increased by 11.1%, from 8.0 to 8.9/10 (p < 0.0001).Per protocol analyses are displayed in 