Summary of correlation analyses to assess variable interdependencies.

<p>Included are results for t-statistics, degrees of freedom (d.f.), <i>p</i>-value, upper and lower limits of 95% confidence intervals for Pearson’s product-moment correlation coefficient, <i>ρ,</i> (LL and UL, respectively), sample correlation coefficient (<i>r</i>), and Spearman’s rank correlation coefficient (<i>s</i>). Covariates exhibiting high, possible problematic correlations are typed in boldface.