Figure 2.
Association between RSV loads and cytokine concentrations in RSV patients. LOESS curves for CXCL10(IP-10), IFN-λ1, IL-6, and CXCL8 in RSV outpatients (n = 78), and RSV inpatients (n = 141). The Y-axis represents cytokine concentrations in pg/mL and the X-axis RSV load in log10 copies/mL in the 2 study groups (RSV outpatients in red and RSV inpatients in blue). Analyses by polynomial and restricted cubic spline regression with the linear regression line included as a reference. Abbreviations: IFN, interferon; IL, interleukin; RSV, respiratory syncytial virus.