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Observational Study
©The Author(s) 2025.
World J Clin Cases. Dec 6, 2025; 13(34): 111732
Published online Dec 6, 2025. doi: 10.12998/wjcc.v13.i34.111732
Table 2 Comparison of nicotinamide phosphoribosyltransferase and nicotinamide nucleotide adenylyltransferase 1 concentrations among different pneumonia severity index scores, n (%)

PSI classification
Low risk
Medium risk
High risk
NAMPT (pg/mL) (IQR) 35.29 (34.68)2,327.22 (26.23)1,321.19 (21.71)1,2
NMNAT1 (pg/mL) (IQR) 42.49 (44.50)2,326.19 (26.52)1,318.24 (18.77)1,2


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