Table 1 Patient characteristics and prevalence of Long COVID.

From: Long COVID occurrence in COVID-19 survivors

  1. Data in the “Study population” column represent the numbers and percentages of relevant patients or median values and their interquartile ranges. Data in the “Patients with Long COVID” section represent the numbers and percentages of patients reporting persistent symptoms at a median of 29 days [IQR 23–128] after COVID-19 onset.
  2. Non-IMV non-invasive mechanical ventilation, IMV invasive mechanical ventilation, COPD chronic obstructive pulmonary disease.
  3. †Cochran–Armitage trend test. §Chi-square or Fisher’s exact test.
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