Table 3.
Multivariable logistic regression diagnostic model for COVID-19, with regression (β) coefficients and diagnostic score points
| Variable | Coefficient | SE | Diagnsotic score points | |
| Age | 50–70 | 0.53 (0–0.41) | 0.09 | 1 |
| Sex | Male | 0.23 (0.3–0.73) | 0.10 | 1 |
| Ethnicity | Asian | 0.6 (0.4–0.82) | 0.11 | 1 |
| Black | 0.62 (0.3–0.93) | 0.16 | 1 | |
| Mixed/other | 0.81 (0.4–1.2) | 0.20 | 1 | |
| Unknown | 0.57 (0.3–0.85) | 0.14 | 1 | |
| Cough, fever or shortness of breath | 1.13 (0.9–1.35) | 0.11 | 2 | |
| NEWS2 Score | >5 | 0.87 (0.7–1.05) | 0.09 | 2 |
| CRP | >50 | 1.13 (1–1.32) | 0.09 | 2 |
| Lymphocytes | <1 | 0.54 (0.4–0.73) | 0.10 | 1 |
| Chest X-ray | Lung infiltrates | 1.32 (1.1–1.59) | 0.14 | 2 |
| Other abnormality | 0.66 (0.3–0.98) | 0.16 | 1 |
The constant (intercept) was −4.0 (95% CI −4.4 to −3.6). n=2940.
CRP, C reactive protein; NEWS2, National Early Warning Score 2.