Research Article
A Nomogram Prediction of Length of Hospital Stay in Patients with COVID-19 Pneumonia: A Retrospective Cohort Study
Table 2
Prognostic factors associated with LOS in COVID-19 pneumonia.
| | Variables | Univariate | Multivariate | | HR (95% CI) | value | HR (95% CI) | value |
| | Age, years (≥50 vs. < 50) | 0.58 (0.33–1.01) | 3.22-04 | 0.49 (0.29–0.83) | 0.00734 | | Sex (female vs. male) | 1.89 (1.71–3.25) | 0.0077 | | | | ALT, U/L (≥40 vs. <40) | 0.45 (0.33–0.87) | 0.0065 | 0.49 (0.29–0.83) | 0.00697 | | AST, U/L (≥40 vs. <40) | 0.42 (0.23–0.78) | 3.34-03 | | | | Fever (°C) (≥37.3 vs. < 37.3) | 0.58 (0.35–1.08) | 0.39 | | | | Pneumonia (critical + severe vs. mild) | 0.33 (0.049–0.47) | 1.52-03 | 0.31 (0.18–0.52) | 1.73-05 | | Hemoglobin, g/L (per unit) | 0.97 (0.96–0.99) | 0.034 | | | | (≥0.8 vs. < 0.8) | 1.55 (0.78–2.51) | 0.026 | | (per unit) | 0.96 (0.84–1.16) | 0.047 | | Platelet count ×109/L (≥300 vs. <300) | 2.52 (0.69–7.55) | 0.012 | 1.77 (0.93–3.39) | 0.08201 | | NLR (≥2.75 vs. < 2.75) | 0.77 (0.66–1.20) | 0.22 | | | | C-reactive protein, mg/L (≥2.2 vs. < 2.2) | 0.57 (0.33–1.15) | 0.09. | | | | PLR (≥160 vs. < 160) | 0.68 (0.54–0.88) | 0.478 | | | | Albumin (g/L) (≥35 vs. < 35) | 0.79 (0.49–1.58) | 0.692 | | | | GFR (mL/min) (per unit) | 1.12 (1.11–1.13) | 0.021 | | | | Creatine kinase, U/L (≥185 vs. < 185) | 0.62 (0.36–1.22) | 0.152 | | | | Creatine kinase isoenzymes MB, ng/mL) (≥5 vs. < 5) | 1.46 (0.81–2.88) | 0.447 | | | | Myoglobin, μg/L (≥100 vs. < 100) | 0.21 (0.12–0.76) | 1.65-03 | | | | Lactate, mmol/L (≥1.7 vs. < 1.7) | 0.77 (0.26–1.22) | 0.194 | | | | PF ratio, mmHg (≥300 vs. < 300) | 1.75 (0.99–3.12) | 0.0405 | 1.45 (1.21–1.97) | 0.04133 |
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ALT: alanine aminotransferase; AST: aspartate aminotransferase; NLR: neutrophil-to-lymphocyte ratio; PLR: platelet-to-lymphocyte ratio; GFR: glomerular filtration rate; PF ratio: PaO2/FiO2 ratio. Significance codes: “ ”0.001, “ ”0.01, “ ”0.05, “.”0.1, “ ”1. |
