CRP and chronic kidney disease: (Table 5, Additional file 1: Table S6) In addition, the analysis indicated that increased risk of in-hospital mortality (poor in-hospital survival) was significantly associated with chronic kidney disease (HR = 4.77, 95% CI 1.96–11.62, P = 0.0006), older age ≥ 60 years (HR = 9.45, 95% CI 1.22–72.98; P = 0.0313), and CRP > 20 mg/L (HR = 4.46, 95% CI 1.64–12.10, P = 0.0033).