Psychosocial interventions for ADHD show a small positive overall weighted average effect (SMD = 0.26) in between-group studies, with substantial heterogeneity¶

Claim · All claims
Evidence · 1 study · quant-synthesis r3 · q3
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? The overall weighted average standardized mean difference for ADHD psychosocial interventions was 0.26 (95% CI [0.21, 0.32]), statistically significant, with large between-study heterogeneity (I2 = 93.20%). → 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 · r3

Meta-analysis combining multivariate meta-analysis and robust variance estimation over 123 between-group studies contributing 2312 standardized mean differences. The article reports "0.26 (SE = 0.027, z = 9.67, p < .001)" and notes the assessment of homogeneity suggested I2 = 93.20%, indicating considerable variability between study effect sizes.

"The overall weighted average SMD for the effect of ADHD interventions was 0.26 (SE = 0.027, z = 9.67, p < .001), with a 95% confidence interval [CI] [0.21, 0.32], under the random-effects model."

Discussion¶

Related Claims¶

• Whether studies randomly allocated participants was not significantly related to effect size magnitude in the ADHD psychosocial treatment meta-analysis — related
• Behavioral parent training yields its strongest proximal effect on parenting behaviors (SMD = 0.70, parent rater) among ADHD psychosocial treatments — a narrower finding that bears on this claim
• 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 — related
• Prior meta-analyses of ADHD psychosocial treatment overlapped minimally in the studies they included (2% to 46%), undermining confidence in any single review — related
• Study year of publication was not significantly related to effect size magnitude in the ADHD psychosocial treatment meta-analysis — related
• Associations between psychosocial factors and academic performance are heterogeneous, with 13 of 45 studies reporting null or weak findings — related