McNemar’s odds ratios (ORs) for clinically relevant symptoms of stress, anxiety, depression, insomnia, and suicidal ideation at t2 versus t1. Stress: PSS-10 score ≥ 14, anxiety: GAD-7 score ≥ 11, depression: PHQ-9 score ≥ 11, insomnia: ISI score ≥ 15, suicidal ideation: PHQ-9 item 9 score ≥ 2. The x-axis represents the odds ratios (ORs): <1—clinically relevant symptoms less likely at t2; >1—clinically symptoms more likely at t2. A 95% confidence interval (CI, indicated as grey lines) overlapping 1 indicates a non-significant difference between t1 and t2. The OR for suicidal ideations among boys could not be calculated due to zero events in necessary cells.