Egger's test suggests publication bias may be present, with the selection-model adjusted mean effect falling to 0.36¶

Claim · All claims
Evidence · 1 study · quant-synthesis r1 · q3
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Egger's test was significant (z = 2.38, p < .05), confirming funnel plot asymmetry consistent with a bias toward publishing larger impacts. → José L. Arco-Tirado 2024

Evidence¶

José L. Arco-Tirado 2024¶

José L. Arco-Tirado, Francisco D. Fernández-Martín, Mirian Hervás-Torres, Gracia Jiménez-Fernández, Nuria Calet, Sylvia Defior, Amanda J. Neitzel, Robert E. Slavin. (2024). A Best-Evidence Synthesis and Meta-analysis on Effective Reading Programs in Spanish. Review of Educational Research. https://doi.org/10.3102/00346543241297668

q3 · i? · quant-synthesis · r1

Publication bias assessment using funnel plot inspection and selection modeling with cut points at p = 0.01, 0.05, and 0.20. The article reports Egger's test significant at z = 2.38, p < .05, and no unpublished studies were included in the analyses.

"According to Egger's test, the significant results (z = 2.38, p < .05) confirm evidence of an asymmetry."

Discussion¶

Related Claims¶

• Funnel-plot asymmetry ran contrary to small-study effects because larger-sample studies reported larger effect sizes, likely reflecting longer training programs — related
• Publication bias is present in the embodied vocabulary learning literature, suggesting pooled effects may overestimate the true benefit — related
• Publication-bias tests found no evidence of substantial publication bias in the meta-analytic sample — reports the opposite
• No publication bias is detected in the collected Covid-19 achievement estimates — related
• The bias-adjusted mean moderator effect in STEM education meta-analyses is g = 0.27 with substantial heterogeneity, and the published record shows overwhelming evidence of publication-bias-type selection — related
• The pooled self-efficacy–partnership correlation appears robust to the file-drawer problem — reports the opposite
• Journal-published studies show larger concept-mapping effects than dissertations and conference papers (g = 1.039 vs. 0.254) — related
• Publication bias is present to a varying degree, with published studies reporting larger belief and student-behavior effects than unpublished studies — related
• Publication bias analyses suggest possible small-sample bias for SCED studies, with trim-and-fill reducing the adjusted mean effect to 1.01 — related
• The included scaffolding studies show small-study effects, which the Bayesian approach addresses by shrinking overweighted effect sizes — related
• No evidence of dissemination bias was detected in the meta-analysis — reports the opposite
• Funnel-plot asymmetry suggests possible selection or publication bias, but p-curve analyses indicate evidential value for the pooled relationships — related