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.
Relationship between FT4 and TSH in the spontaneously hypothyroid group according to age. For all patients together, the Spearman correlation coefficient = −0.795, P value <0.0001. The inset shows the slopes within the four age groups: dots and dashes, under 35 yr; dashes, 35–49 yr; dots, 50–64 yr; solid line, over 64 yr.
