Table 4.
Multivariate logistic model for prediction of oxygen requirement
| Odds Ratio | Co-efficients | Standard error of odds ratio | t-score | p > t | 95% confidence interval of odds ratio | ||
|---|---|---|---|---|---|---|---|
| Age (years) | |||||||
| <40 | 1 | ||||||
| 40–59 | 8.58 | 2.15 | 4.84 | 3.81 | <0.001 | 2.84 | 25.89 |
| ≥60 | 10.24 | 2.33 | 5.11 | 4.66 | <0.001 | 3.85 | 27.24 |
| LDH (Units/L) | |||||||
| <250 | 1.00 | ||||||
| 250–499 | 2.87 | 1.06 | 0.84 | 3.61 | <0.001 | 1.62 | 5.10 |
| ≥500 | 3.96 | 1.38 | 2.01 | 2.71 | 0.007 | 1.46 | 10.77 |
| CRP (mg/L) | |||||||
| ≤50 | 1.00 | ||||||
| >50 | 5.57 | 1.72 | 1.51 | 6.32 | <0.001 | 3.27 | 9.48 |
| IHD | 1.91 | 0.65 | 0.59 | 2.12 | 0.034 | 1.05 | 3.49 |
| COPD | 4.19 | 1.44 | 2.06 | 2.92 | 0.003 | 1.60 | 10.98 |
COPD Chronic obstructive pulmonary disease; IHD Ischaemic heart disease, LDH Lactate dehydrogenase, CRP C-reactive protein