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.
Scatter diagram of final grade and patient age. Of patients less than 20 years of age, the final MRI revealed that 69.2% were in the grade III + IV group. There was a significant difference in the frequency of grade III + IV between age groups (age <20 vs. ≥20 years; P < 0.0001).
