Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Forest plot of serum procalcitonin. PCT was measured in AECOPD cases with bacteria positive and bacteria negative microbiological cultures. PCT was measured in (ng/ml) in each study. PCT is significantly elevated in bacterial cases than non-bacterial cases. (WMD = 0.31, 95% CI: 0.21–0.41, p < 0.001). AECOPD, acute exacerbation of chronic obstructive pulmonary disease; PCT, procalcitonin; SD, standard deviation; WMD, weighted mean difference; CI, confidence interval.
