Figure 2.

Proportion of individuals with long COVID and symptoms (a: at baseline in the whole cohort and in the follow-up groups; b: at baseline vs. at follow-up in the follow-up group) or impairment (c: in the whole cohort and in the follow-up groups vs. healthy controls; d: at baseline vs. at follow-up in the follow-up group). Significant differences (p < 0.05) are indicated with a star, numbers above columns indicate the sample size (n) for each group. Note for c: compared between healthy controls (grey) and at baseline for long COVID (blue).