Clinically meaningful differences between juvenile and adult participants were also found. Compared to adults, juveniles were more likely to be male, recall an earlier age at OCD onset, and have different lifetime comorbidity patterns. Significant outcomes were that children were less likely than either adolescent or adults to report aggressive obsessions and mental rituals.

The glaring - and possibly only -- distractions that I see with this study are that groups are ill matched. There is a large range of ages even amongst each group (children ranged between 6-12 whilst adolescents ranged between 13-18); they were ill-matched in OCD symptoms too; there were far less children than adolescents; and adults more than doubled the size of the juvenile and children group combined. Self-reported OCD symptom could have been produced by an alternate factor (another determinant) that was not taken into account. What could have been taken then as start of...
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