Serial serum PCT levels: association with outcome
| Variables | Day 1 serum procalcitonin (n=99) (ng/mL) | Day 3 serum procalcitonin (n=72) (ng/mL) | Day 5 serum procalcitonin (n=52) (ng/mL) | Day 7 serum procalcitonin (n=23) (ng/mL) |
| All patients (n=99) (Median (IQR)) | 7.57 (24.18) | 2.8 (17.36) | 1.815 (6.41) | 0.47 (3.02) |
| Survivors (n=43) (Median (IQR)) | 7.1 (18.53) | 1.74 (9.4) | 0.87 (2.15) | 0.34 (0.69) |
| Non-survivors (n=56) (Median (IQR)) | 10.83 (26.92) | 6.02 (29.14) | 7.13 (16.93) | 6.66 (9.02) |
| P value (non-parametric) | 0.683 | 0.016* | <0.001* | 0.164 |
*p-value less than the pre-defined level of significance (i.e. < 0.05)
PCT, procalcitonin.