The Covariance Adjustment Approaches for Combining Incomparable Cox Regressions Caused by Unbalanced Covariates Adjustment: A Multivariate Meta-Analysis Study

<div>Comparisons of the estimated MSE in the four proposed methods with different numbers of studies. The horizontal axis indicates the four proposed methods. ZC: zero correlation; CC: common correlation; EC: estimated correlation; MMC: multivariate multilevel correlation. Each point on the graph is averaged over 2000 simulation realizations.</div>

Computational and Mathematical Methods in Medicine

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Figure 1

Figure 1: The Covariance Adjustment Approaches for Combining Incomparable Cox Regressions Caused by Unbalanced Covariates Adjustment: A Multivariate Meta-Analysis Study 

Figure 1 | The Covariance Adjustment Approaches for Combining Incomparable Cox Regressions Caused by Unbalanced Covariates Adjustment: A Multivariate Meta-Analysis Study 