Characteristics of Gut Microbiota in Patients with Severe Pneumonia and its Potential Clinical Relevance.

Significant differences were observed in age ( p = 0.025), total length of hospital stay ( p < 0.001), and C-reactive protein (c-reactive protein) ( p < 0.001).

Logistic regression analysis identified age ( p = 0.024) and total hospital stay ( p < 0.001) as factors influencing the likelihood of improvement and discharge.

LDA Effect Size (LDA Effect Size) analysis highlighted significant microbial differences at various taxonomic levels between the two populations.

Three machine learning algorithms identified 9 microbial markers for severe pneumonia.