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Direct linkBelias, Michail; Rovers, Maroeska M.; Hoogland, Jeroen; Reitsma, Johannes B.; Debray, Thomas P. A.; IntHout, Joanna – Research Synthesis Methods, 2022
One of the main goals of an individual participant data meta-analysis (IPD-MA) of intervention studies is to investigate whether treatment effect differences are present, and how they are associated with patient characteristics. Examining treatment heterogeneity due to a continuous covariable (e.g., BMI or age) may be challenging, since there is…
Descriptors: Meta Analysis, Outcomes of Treatment, Prediction, Multivariate Analysis
Montiel, Mariana; Vidakovic, Draga; Kabael, Tangul – Investigations in Mathematics Learning, 2009
The present study was implemented as a prelude to a study on the generalization of the single variable function concept to multivariate calculus. In the present study we analyze students' mental processes and adjustments, as they are being exposed to single variable calculus with polar coordinates. The results show that there appears to be a…
Descriptors: Multivariate Analysis, Calculus, Misconceptions, Mathematical Concepts
