Effect sizes across ADHD between-group intervention studies range from −0.76 to 1.12 with a median of 0.18 and a slightly positive skewed distribution¶

Claim · All claims
Evidence · 1 study · quant-synthesis r? · q3
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? The distribution of the 123 studies' standardized mean differences spanned negative and positive values, with a median of 0.18 and most values larger than zero. → Fabiano 2021

Evidence¶

Fabiano 2021¶

Fabiano, G. A., Schatz, N. K., Aloe, A. M., Pelham, W. E., Jr., Smyth, A. C., Zhao, X., Merrill, B. M., Macphee, F., Ramos, M., Hong, N., Altszuler, A., Ward, L., Rodgers, D. B., Liu, Z., Ersen, R. K., & Coxe, S. (2021). Comprehensive Meta-Analysis of Attention-Deficit/Hyperactivity Disorder Psychosocial Treatments Investigated Within Between Group Studies. Review of Educational Research. https://doi.org/10.3102/00346543211025092

q3 · i? · quant-synthesis · r?

Descriptive analysis of the 123 between-group studies' effect sizes, presented in a boxplot (Figure 2). The article reports the range, median, and skew, noting "most of the distribution includes values larger than zero."

"The SMD ranged from −0.76 to 1.12 with a median of 0.18, and a slightly positive skewed distribution; most of the distribution includes values larger than zero, indicating that most studies to some degree reported positive effect of ADHD interventions."

Discussion¶

Related Claims¶

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