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. 2013 May 20;69A(2):165–173. doi: 10.1093/gerona/glt023

Table 3.

Weights for Combining Individual Cytokines for the Inflammatory Indices

Variable WSS PCS IIS
Log(IL-6) 0.13 0.5 1.0
Log(sTNFR1) 0.45 0.47 2.0
Log(CRP) 0.05 0.48 0
Log(IL-18) 0.22 0.31 0
Log(IL-1RA) 0.15 0.44 0

Notes: CRP = C-reactive protein; IIS = inflammation index score; IL-6 = interleukin-6; IL-18 = interleukin-18; IL-1RA = IL-1-receptor antagonist; sTNFR1 = soluble tumor necrosis factor-α receptor-1; PCS = principal components summary score; WSS = weighted summary score.