Differing impact of the COVID-19 pandemic on youth mental health: combined population and clinical study.

No significant group differences in BMI trajectories during the pandemic were observed (F(2,392) = 0.43; P = 0.65, η p 2 = 0.002); a nominally significant increase in BMI was observed in the participants at low risk for eating disorder (pre-PD < LD2, P < 0.05) but not in those with higher eating disorder risk ( Fig. 5(d) ).

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