Severe fatigue in the first year following SARS-CoV-2 infection: A prospective cohort study 5 145 Figure 1. The occurrence of severe fatigue among participants with mild, moderate, and severe/critical disease who completed the Short Fatigue Questionnaire Central dot represents proportion with severe fatigue among those who completed each questionnaire; vertical bars are corresponding 95% CIs for that group. Total sample size differs per month due to varying survey response rates and lengths of follow-up time: Month 1: n = 212, Month 3: n = 258, Month 6: n = 208, Month 9: n = 148, Month 12: n = 89. Severe fatigue defined has a short fatigue questionnaire (SFQ) score ≥ 18.
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