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Fig. 7 | BMC Medical Research Methodology

Fig. 7

From: Comparison of statistical methods used to meta-analyse results from interrupted time series studies: an empirical study

Fig. 7

Pairwise comparisons of the between-study variance estimates (\({\widehat{\tau }}^{2}\)) yielded by combinations of ITS analysis methods and between-study variance estimators. The between-study variance estimate yielded by the row method (y-axis) versus the between-study variance estimate yielded by the column method (x-axis), for the level-change (top triangle) and slope-change per month (bottom triangle) meta-analyses. DL DerSimonian and Laird, HKSJ Hartung-Knapp/Sidik-Jonkman, ITS interrupted time series, OLS ordinary least squares, REML restricted maximum likelihood

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