Table 3.
Multivariate linear regression for length of stay.
| Variable | Estimate | SE | p-Value |
|---|---|---|---|
| Intercept | −3.64 | 5.26 | 0.49 |
| Antibiotic treatment before hospitalization (atb = 1) | 0.29 | 1.56 | 0.85 |
| Antibiotic treatment before hospitalization (atb = 2) | 7.24 | 4.07 | 0.08 |
| Antibiotic treatment during hospitalization (atb = 1) | −2.13 | 3.57 | 0.55 |
| Antibiotic treatment during hospitalization (atb = 2) | −2.31 | 3.67 | 0.53 |
| Antibiotic treatment during hospitalization (atb = 3) | 19.02 | 6.62 | <0.001 |
| WHO ordinal scale at admission | 3.51 | 0.81 | <0.001 |
| CT scan GGO | 5.64 | 3.23 | 0.08 |
| CT scan FO | 0.45 | 5.48 | 0.93 |
| CT scan GGO and FO | 10.17 | 1.93 | <0.001 |
| CT scan others | 4.11 | 8.49 | 0.63 |
| Chest X-ray GGO | 1.83 | 3.52 | 0.60 |
| Chest X-ray FO | 4.36 | 3.74 | 0.25 |
| Chest X-ray GGO and FO | 2.93 | 3.63 | 0.42 |
| Chest X-ray others | 4.29 | 6.53 | 0.51 |
| CRP at admission (mg/mL) | 0.14 | 0.09 | 0.13 |
| PCTI at admission (ng/mL) | 0.49 | 0.19 | 0.01 |
| Positive PUA | 1.71 | 2.37 | 0.47 |
Note. Abbreviations: SE, standard error; GGO, ground-glass opacity; FO, focal opacity; CRP, C-reactive protein; PCTI, Procalcitonin, PUA pneumococcal urinary antigen.