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.
Survival curves for model 4 including clinical covariates and normalized FDG uptake values from within the ANCOVA-ROI. Three risk groups were defined corresponding to the lower, middle and upper thirds of subjects in the PI distribution. With the low-risk group defined as reference, the hazard ratios are 3.2 [95% C.I.: 1.6–6.3, p < .001] and 8.1 [95% C.I.: 4.2–15.6, p < .001] for the medium- and high-risk group, respectively.
