Fig. 3.
Percentages of no wrinkling, fine wrinkling, moderate wrinkling and severe wrinkling in different age groups of the 848 adults from Hangzhou City, China
χ 2 test was performed for comparison with the middle-aged group, * P<0.05
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.