p-Values from univariate analyses for sexual activity and reasons for lack of sexual activity by risk factor. Red values are highly significant (Bonferroni-corrected p ≤ 0.01), yellow values are moderately significant (Bonferroni-corrected p ≤ 0.05), green values are borderline significant (Bonferroni-corrected p ≤ 0.1), gray values are nonsignificant, but were considered in multivariate model building (p < 0.1), and white values are nonsignificant (p > 0.1). Dendrograms are based on Euclidean distance.