Effect of low levels of serum IgG levels adjusted by independent risk factors on ICU admission
| Variable | OR (95% CI) | p Value |
|---|---|---|
| Low level of total IgG (≤680 mg/dL) | 2.45 (1.4 to 4.2) | 0.002 |
| CURB-65 severity score | 4.62 (3.33 to 6.4) | <0.001 |
| Chronic heart disease | 0.22 (0.12 to 0.4) | <0.001 |
| Chronic respiratory disease | 0.29 (0.17 to 0.51) | <0.001 |
ICU, intensive care unit.