Table 3.
Univariate and multivariate Cox regression analysis of risk factors for 30-day mortality.
| Variable | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|
| HR | 95%CI for HR | P value | aHRa | 95%CI for HR | P value | |
| Sex, male vs female | 1.61 | 0.66-3.93 | 0.295 | |||
| Age, year, ≥65 vs <65 | 1.90 | 0.94-3.85 | 0.074 | |||
| Heart dysfunction | 2.21 | 1.07-4.56 | 0.031 | |||
| WBC, 109/L, ≥14.3 vs <14.3 | 3.15 | 1.53-6.50 | 0.002 | |||
| NEUT, 109/L, >11.9vs <11.9 | 3.37 | 1.63-6.96 | 0.001 | 3.12 | 1.08-8.98 | 0.035 |
| NLR, ≥10.3vs <10.3 | 4.37 | 1.99-9.58 | <0.001 | |||
| PLT, 109/L, <75 vs ≥75 | 5.23 | 2.55-10.75 | <0.001 | |||
| PT, ≥16 vs <16 | 4.44 | 2.06-9.56 | <0.001 | |||
| APTT, ≥42 vs <42 | 4.97 | 2.19-11.26 | <0.001 | |||
| A/G, ≥1.69 vs <1.69 | 2.85 | 1.39-5.85 | 0.004 | |||
| CRP, mg/L, ≥149 vs <149 | 8.34 | 3.48-19.96 | <0.001 | 4.41 | 1.45-13.45 | 0.009 |
| Creatinine, μmol/L, ≥97 vs <97 | 3.34 | 1.58-7.09 | 0.002 | |||
| PCT, ng/mL, ≥3 vs <3 | 4.72 | 2.20-10.16 | <0.001 | |||
| Effective treatment | 0.51 | 0.25-1.05 | 0.068 | |||
aAdjusted hazard ratio for age and sex.
The thresholds for blood tests are based on the cut-off point of the ROC curve.
CI, confidence interval; HR, hazard ratio; WBC, white blood cell count; PLT, platelet; NEUT, neutrophil; NLR, neutrophil-to-lymphocyte ratio; A/G, albumin/globulin; PT, Prothrombin Time; APTT, Activated Partial Thromboplastin Time; PCT, procalcitonin; CRP, C-reactive protein.