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. 2019 Jan 23;14:311–319. doi: 10.2147/COPD.S188186

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© 2019 Alotaibi et al. This work is published and licensed by Dove Medical Press Limited

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Box plots depicting length of hospital stay in the three groups.

Note: The pathogen-negative group had longer hospitalization than the bacteria group (P=0.02), and a significant linear trend was present demonstrating that length of hospital stay decreased from the pathogen-negative group to the bacteria group (P=0.017).