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. 2020 Sep 14;10:15058. doi: 10.1038/s41598-020-72164-7

Table 4.

Risk factors between baseline PCT, CRP and NLR and death in patients with COVID-19 in the subgroup analysis.

Laboratory tests Characteristics n Model 0a Model 1b
HR (95% CI) P HR (95% CI) P
PCT, ng/mL (≥ 0.10 vs. < 0.1) Age (< 60y) 37 3.76e+8 (0–Inf) 0.999 84,176.46 (0–Inf) 0.989
Age (≥ 60y) 39 10.08 (1.2978.80) 0.028 53.76 (1.022,824.88) 0.049
Male 46 6.27 (0.79–49.89) 0.083 1.53e+6 (0–Inf) 0.989
Female 30 1.28e+9 (0–Inf) 0.999 1.58 (0–Inf) 0.999
Severe* 50 7.46 (0.9856.54) 0.052 39.37 (1.501,036.84) 0.028
CRP, mg/L (≥ 52.14 vs. < 52.14) Age (< 60y) 37 4.39 (0.48–39.73) 0.188 2.93e+13 (0–Inf) 0.990
Age (≥ 60y) 39 23.59 (3.01185.03) 0.003 14.95 (0.78–287.68) 0.073
Male 46 6.37 (1.2931.41) 0.023 2.29e+16 (0–Inf) 0.998
Female 30 3.06e+9 (0–Inf) 0.999 8.17e+20 (0–Inf) 0.948
Severe* 50 5.54 (1.2624.28) 0.023 4.72 (0.91–24.56) 0.065
NLR (≥ 3.59 vs. < 3.59) Age (< 60y) 37 3.38e+8 (0–Inf) 0.999 3.57e+8 (0–Inf) 0.998
Age (≥ 60y) 39 5.92 (0.74–47.58) 0.094 0 (0–Inf) 0.960
Male 46 3.56e+8 (0–Inf) 0.998 2.56e+8 (0–Inf) 0.999
Female 30 3.38 (0.4–28.28) 0.261 0 (0–Inf) 0.960
Severe* 50 0.81 (0.1–6.58) 0.841 3.47 (0.43–28.14) 0.244

Data in bold indicate values of statistical significance.

COVID-19 coronavirus disease 2019, HR hazard ratio, 95% CI confidence interval, PCT procalcitonin, CRP C-reaction protein, NLR neutrophil-to-lymphocyte ratio.

aModel 0 was unadjusted.

bModel 1 was adjusted for cancer, ARDS, hypohepatia, renal insufficiency, heart failure and shock.

*Severe included critical severe and severe clinical types.