Browsing by Subject "Meta-review"

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    Adherencia a la declaración PRISMA en los meta-análisis de intervenciones experimentales publicados en Educación: una meta-revisión sistemática
    (Ministerio de Educación y Formación Profesional, 2026-04-01) Sánchez Martín, Micaela; Gutiérrez Sánchez, Marta; Olmedo-Moreno, Eva María; Navarro Mateu, Fernando; Teoría e Historia de la Educación; Facultad de Educación
    Objective: To assess adherence to the PRISMA statement in meta-analyses of educational interventions aimed at improving academic performance between 2009 and 2022. Method: Systematic review. Eligibility criteria: Meta-analyses of experimental studies evaluating educational interventions designed to improve academic performance, published in English or Spanish between January 1, 2009, and April 30, 2022. Exclusion criteria: Other designs or outcomes, and inaccessible publications. Bibliographic search: Conducted in four databases (ERIC, Web of Science, Scopus, and PubMed). Data extraction: Based on a previously developed and registered protocol. Data: Adherence to PRISMA recommendations, risk of bias according to AMSTAR 2, and various characteristics of published studies.Statistical analyses: Chi-square test or Fisher’s exact test. As measures of association, odds ratios and ß were calculated, with 95% confidence intervals (95%CI) and p-values through logistic and linear regression analyses. Results: Out of 2,076 identified studies, 69 were included. The mean PRISMA score was 19.7 (SD = 4.4) out of 27. A total of 51.8% (n = 14) of the recommendations had adherence rates above 75%. Significant differences were found in adherence to the recommendations depending on whether the authors declared compliance with PRISMA in 14 of the 27 items (51.8%). Compliance with 13 of the 27 recommendations (48.1%) was associated with a lower risk of bias. PRISMA adherence was associated with lower risk of bias, more recent publication, health-related education, and interventions involving physical activities in higher education. Conclusions: Adherence to PRISMA in published educational meta-analyses of experimental interventions to improve academic performance is clearly improvable.
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    Open Access
    Quality of flowcharts in meta-analyses in Education: a systematic review
    (Universidad de Almería, 2025-02-13) Sánchez Martín, Micaela; Gutiérrez Sánchez, Marta; Olmedo-Moreno, Eva María; Navarro Mateu, Fernando; Teoría e Historia de la Educación; Facultad de Educación
    Objetivo: evaluar la calidad de los diagramas de flujo de los meta-análisis publicados en educación. Métodos: Revisión sistemática. Criterios inclusión: metaanálisis de estudios experimentales sobre intervenciones educativas centradas en rendimiento académico, en inglés o español entre 1/enero/2009 y 30/abril/2022. Criterios exclusión: otros diseños, otros resultados o artículos no accesibles. Búsqueda bibliográfica: ERIC, WoS, Scopus y PubMed y búsqueda manual. Selección de artículo y extracción de datos con un protocolo previamente elaborado y registrado por dos evaluadores independientes. Datos: características de los estudios, riesgo de sesgo y adherencia a la PRISMA. Los diagramas de flujo se evaluaron con una 16 criterios de calidad según la PRISMA. Análisis estadísticos: estadísticos descriptivos, Chi-cuadrado o prueba exacta de Fisher y análisis de regresión logística y lineal obteniendo la OR y el coeficiente ß, respectivamente, con sus IC95% y p-valores. Resultados: De 2076 estudios inicialmente identificados, se incluyeron 69 (41 (59.4%) con un diagrama de flujo. Seis de los 16 criterios tuvieron un cumplimiento inferior al 50%. El diagrama de flujo se asoció con menor riesgo de sesgos y mayor adherencia a la PRISMA, entre otros factores descritos. Conclusiones: la utilización y calidad del diagrama de flujo en los metaanálisis publicados en educación es insatisfactoria.
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    Open Access
    Transparency in Cognitive Training Meta-analyses: A Meta-review
    (Springer Nature, 2024-04-19) López Nicolás, Rubén; Sandoval Lentisco, Alejandro; Tortajada Gomariz, Miriam; López López, José Antonio; Sánchez Meca, Julio; Psicología Básica y Metodología; Facultad de Psicología y Logopedia
    Meta-analyses often present flexibility regarding their inclusion criteria, outcomes of interest, statistical analyses, and assessments of the primary studies. For this reason, it is necessary to transparently report all the information that could impact the results. In this meta-review, we aimed to assess the transparency of meta-analyses that examined the benefits of cognitive training, given the ongoing controversy that exists in this field. Ninety-seven meta-analytic reviews were included, which examined a wide range of populations with different clinical conditions and ages. Regarding the reporting, information about the search of the studies, screening procedure, or data collection was detailed by most reviews. However, authors usually failed to report other aspects such as the specific meta-analytic parameters, the formula used to compute the effect sizes, or the data from primary studies that were used to compute the effect sizes. Although some of these practices have improved over the years, others remained the same. Moreover, examining the eligibility criteria of the reviews revealed a great heterogeneity in aspects such as the training duration, age cut-offs, or study designs that were considered. Preregistered meta-analyses often specified poorly how they would deal with the multiplicity of data or assess publication bias in their protocols, and some contained non-disclosed deviations in their eligibility criteria or outcomes of interests. The findings shown here, although they do not question the benefits of cognitive training, illustrate important aspects that future reviews must consider.