Fig. 6From: A prediction model for hospital mortality in patients with severe community-acquired pneumonia and chronic obstructive pulmonary disease A Spearman correlation analysis. B–F The restricted cubic splines with three knots. The horizontal dashed line represents the reference OR of 1.0. The model was multivariate-adjusted for age, diabetes, chronic renal diseases, systolic blood pressure (SBP), fibrinogen, interleukin 6 (IL-6) and blood urea nitrogen (BUN). OR odds ratio; 95% CI 95% confidence intervalBack to article page