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Box plots of IL-6 and IL-8 plasma levels at baseline in each BMI category. Plotted data are unadjusted. P values (*) result from multivariable linear regression including log-transformed cytokine levels and BMI as a continuous variable with adjustment for gender, Acute Physiologic and Chronic Health Evaluation (APACHE) III score, comorbid diabetes, and acute lung injury (ALI) risk factor. IL = interleukin.
