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. 2023 Jan 26;61(1):2201117. doi: 10.1183/13993003.01117-2022

FIGURE 3.

FIGURE 3

Individual (symbols and lines) and grouped data (box-and-whisker plots showing mean, interquartile range and range) for 17 patients during acute COVID-19 infection and again in early recovery, together with 13 healthy individuals: alveolar–arterial partial pressure differences for a) oxygen (PA−aO2) and b) carbon dioxide (Pa−ACO2), and c) shunt and d) alveolar dead space. Horizontal dotted lines in (c) and (d) show the 95% upper confidence intervals for normal. *: p<0.05; **: p<0.0001.