highly significantp < .0001
However, comparing adherence trends in the subsamples with comorbid ADHD (n = 117) and without ADHD (n = 62) showed that the association between younger age and poor adherence was highly significant in the subsample with ADHD (OR = 0.57, 95% CI 0.45-0.73, p < .0001) and nonsignificant in the subsample without ADHD (OR = 1.08, 95% CI 0.80-1.47, p = .6).