K-M plots for the risk of all-cause death (A) and CV death (B) in
groups of low SII, intermediate SII, and high SII among patients with CHF.
Abbreviations: SII-L, groups of low SII (407.0); SII-M, groups of intermediate
SII (407.0–672.8); SII-H, groups of high SII (672.8); CHF, congestive heart failure; SII, systemic immune-inflammation
index; K-M, Kaplan-Meier; CV, cardiovascular.