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.
Percentile plots of the fourth Korotoff phase (K4) and fifth Korotkoff phase (K5) difference by sex and age group. Each bar includes the middle 95% (2.5th percentile to 97.5th percentile) of the distribution, and the horizontal lines represent various percentiles. The dark triangle represents the mean difference. Boys are on the left; girls are on the right.
