To address our second research question, correlations between sex steroid levels, FS white matter measures, and delay-discounting performance were computed using non-parametric Spearman's correlations.
With regard to our first research question, correlations between individual quality indicators and each of the overall scores proved to be considerable, in contrast to their rather weak associations with the global rating.
The graph "principal component scatterplot" (made on the first two principal components) suggests any potential factors (that is, related groups of questions); Correlation matrix, which shows for each pair of variables the correlation coefficient.
For both PA questions, correlation coefficients were in the expected directions according to the type of validity being assessed.
Both depression and anxiety were significantly related to the presence of denial (Question 38) (correlation coefficient=0.317, P<0.0001 and correlation coefficient=0.232, P=0.001, respectively) when calculated in the entire patient population, but not in Asian patients considered alone.
The same procedure was repeated for the SF-8 to identify questions with highest correlation to mental and physical quality of life scores, and for the PRIME MD to identify which question correlated best with screening positive for depression.
The complex ages of these surfaces call into question any correlation of such surfaces based solely on their elevation above the modern channel.
