Table 4.
Association between low serum levels of immunoglobulins and CURB-65 score
| Immunoglobulins cutpoints, mg/dL | CURB-65 severity score |
p Value | |||||
|---|---|---|---|---|---|---|---|
| 0 (n=71) | 1 (n=137) | 2 (n=124) | 3 (n=68) | 4 (n=14) | 5 (n=4) | ||
| IgG, total (≤680) | 14 (19.7) | 29 (21.2) | 36 (29.0) | 28 (41.2) | 5 (35.7) | 3 (75) | 0.005 |
| IgG1 (≤323) | 6 (8.5) | 11 (8) | 17 (13.7) | 18 (26.5) | 3 (21.4) | 2 (50) | 0.001 |
| IgG2 (≤154) | 11 (15.5) | 30 (21.9) | 22 (17.7) | 23 (33.8) | 4 (28.6) | 1 (25) | 0.113 |
| IgG3 (≤10) | 1 (1.4) | 2 (1.5) | 2 (1.6) | 1 (1.5) | 0 | 0 | 0.998 |
| IgG4 (≤5) | 5 (7) | 2 (1.5) | 6 (4.8) | 2 (3) | 0 | 0 | 0.353 |
| IgA (≤50) | 2 (2.8) | 4 (2.9) | 2 (1.6) | 3 (4.4) | 1 (7.1) | 0 | 0.820 |
| IgM (≤30) | 4 (5.6) | 9 (6.6) | 12 (9.7) | 10 (14.7) | 2 (14.3) | 0 | 0.331 |
Data as frequencies and percentages in parentheses.