Feelings of social isolation were measured by the following question: “How socially isolated have you felt in the last 14 days?”, with responses ranging from 1 (“not isolated”) to 10 (“extremely isolated”). For the descriptive analyses, a dichotomous version of this variable was created, assessing “low isolation” (scores 1–6) and “high isolation” (≥7). This question was not asked in wave 11 -mid-end of July-, which created a large number of missing values. These were imputed by taking the last observation available (n = 33,867) from wave 10 -early to mid-July. Alternatively, they were also imputed by means of multiple imputation (MICE). Yet, as results were practically identical, the models presented rely on the first method.
