CXCL8 and lymphopenia: Multivariate analyses further established IL-8 as an independent predictor for both lymphopenia (OR = 0.26; 95% Confidence Interval [CI] = 0.07–0.78; P=0.0167) and infection (OR = 4.76; 95% CI = 0.07–0.62; P=0.0049).