Figure 3.
FP density by age group and sex. Shaded boxes represent the interquartile range, diamonds within the boxes show the means, horizontal lines within the boxes indicate the medians, and vertical lines show the range of the data.
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.