teen Mental Health First Aid: 12-month outcomes from a cluster crossover randomized controlled trial evaluation of a universal program to help adolescents better support peers with a mental health problem

Table 5 Outcomes for measures of stigma

All mixed models were adjusted for school, year, gender, age and K6 scores. Boldface indicates statistical significance
^aFor all stigma items a reduction in scores was a positive outcome, indicating lower stigmatising beliefs
^bFor John vignette depicting peer with symptoms of depression & suicide risk n = 791; for Jeanie vignette depicting peer with symptoms of social anxiety n = 769
^cFor John vignette n = 807; for Jeanie vignette n = 792
^dFor John vignette n = 429; for Jeanie vignette n = 409
^eFor John vignette n = 465; for Jeanie vignette n = 446
^fLarge effect size Cohen’s d = 0.8, medium effect size d = 0.5, small effect size d = 0.2
^gPeriod-cluster intraclass correlation coefficients (ICC) indicate the proportion of variability in the outcome attributable across clusters
^hCalculated on change over time rather than difference at follow-up due to baseline imbalances

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