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Bramley, Paul; López-López, José A.; Higgins, Julian P. T. – Research Synthesis Methods, 2021
Standard meta-analysis methods are vulnerable to bias from incomplete reporting of results (both publication and outcome reporting bias) and poor study quality. Several alternative methods have been proposed as being less vulnerable to such biases. To evaluate these claims independently we simulated study results under a broad range of conditions…
Descriptors: Meta Analysis, Bias, Research Problems, Computation
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Günhan, Burak Kürsad; Friede, Tim; Held, Leonhard – Research Synthesis Methods, 2018
Network meta-analysis (NMA) is gaining popularity for comparing multiple treatments in a single analysis. Generalized linear mixed models provide a unifying framework for NMA, allow us to analyze datasets with dichotomous, continuous or count endpoints, and take into account multiarm trials, potential heterogeneity between trials and network…
Descriptors: Meta Analysis, Regression (Statistics), Statistical Inference, Probability
Valentine, Jeffrey C.; Konstantopoulos, Spyros; Goldrick-Rab, Sara – Review of Educational Research, 2017
This article reports a systematic review and meta-analysis of studies that use regression discontinuity to examine the effects of placement into developmental education. Results suggest that placement into developmental education is associated with effects that are negative, statistically significant, and substantively large for three outcomes:…
Descriptors: Meta Analysis, Developmental Studies Programs, Student Placement, Outcomes of Education
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Tipton, Elizabeth – Society for Research on Educational Effectiveness, 2014
Replication studies allow for making comparisons and generalizations regarding the effectiveness of an intervention across different populations, versions of a treatment, settings and contexts, and outcomes. One method for making these comparisons across many replication studies is through the use of meta-analysis. A recent innovation in…
Descriptors: Replication (Evaluation), Robustness (Statistics), Meta Analysis, Regression (Statistics)
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Serra-Pinheiro, Maria Antonia; Coutinho, Evandro S. F.; Souza, Isabella S.; Pinna, Camilla; Fortes, Didia; Araujo, Catia; Szobot, Claudia M.; Rohde, Luis A.; Mattos, Paulo – Journal of Attention Disorders, 2013
Objective: To investigate meta-analytically if the association between ADHD and illicit substance use (ISU) is maintained when controlling for conduct disorder/oppositional-defiant disorder (CD/ODD). Method: A systematic literature review was conducted through Medline from 1980 to 2008. Data extracted and selections made by one author were…
Descriptors: At Risk Persons, Attention Deficit Hyperactivity Disorder, Substance Abuse, Behavior Disorders
Almutairi, Mashal – ProQuest LLC, 2013
The main purpose of this research was to survey the literature about the U.S. education system and synthesize the important conclusions that could be identified as the main features of the education system in general as they relate to student achievement. The criteria were set and the meta-analysis procedures were carefully followed. This process…
Descriptors: Educational Change, Elementary Secondary Education, Meta Analysis, Regression (Statistics)