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. 2021 May 13;184:106464. doi: 10.1016/j.rmed.2021.106464

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Fig. 2 — a-2c Comparison of ventilator, ICU, and hospital free days at day 28. Dots are individual patients and crosses are the means. Medians are zero for both pneumothorax and non-pneumothorax group. Ventilator (2a), ICU (2b) and hospital (2c) free days at day 28, are higher for those without a pneumothorax as compared to those with pneumothorax (Mann Whitney test; p<0.001).