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.
Comparison of IgG concentrations using the percent error from the mean to calculate agreement between bead-based immunoassays and WHO reference assignments for PCV-7 serotypes. Box plots give the mean concentration and the 25% and 75% quartiles. Concentrations outside of the 95% confidence intervals are represented by open circles. Percentages below the box plots are the levels of agreement.
