Evolution of COVID-19 symptoms during the first 12 months after illness onset 4 127 †mMRC Score: None = no breathlessness; Grade 1 = breathlessness only on strenuous exercise; Grade 2 = shortness of breath when hurrying on the level or walking up a slight hill; Grade 3 = walks slower than people of same age on the level because of breathlessness or has to stop to catch breath when walking at their own pace on the level; Grade 4 = stops for breath after walking ∼100 m or after few minutes on the level; and Grade 5 = too breathless to leave the house, or breathless when dressing or undressing. Figures S4a-e. Kaplan-Meier plots of time to recovery from each individual COVID-19 symptom, by clinical severity group Clinical severity groups of severe and critically severe COVID-19 combined due to small numbers in the critical severity group. Dashed red line denotes cut-off point of 12 weeks (as per NICE definition of post-COVID syndrome); black vertical lines indicate time-points at which participants were censored. Participants vaccinated during follow-up who had not yet experienced a recovery event (n=6) were right-censored at date of (first) vaccination. The curves represent the percentages of study participants recovering from symptoms during one year after COVID-19 illness onset. Shaded areas represent 95% CIs. The numbers of individuals at risk during each 28-day interval since illness onset are given below the graph.
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