TABLE 4.
Simulation Posterior Summaries for Partially-Missing Within-Study Correlations: MAR Missingness
| Missing Data Mechanism: MAR Taking Into Account Observed Trial-Level Variables | ||||||||||||||||||||||||
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| Missing, Non-Missing Average rj Discrepancy = 0.2 | ||||||||||||||||||||||||
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| Mean Impute (d) | Informative Uniform Prior (e) | Hierarchical Conditional Prio (h) | ||||||||||||||||||||||
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| β Bias | CVG* | CVG | σe Bias | β Bias | CVG* | CVG | σe Bias | β Bias | CVG* | CVG | σe Bias | |||||||||||||
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| Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | Setup 2 | Setup 3 | |
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| PM=0.2 | 0.10 | 0.01 | 0.98 | 0.98 | 0.96 | 0.95 | −0.02 | 0.00 | 0.10 | 0.01 | 0.98 | 0.98 | 0.96 | 0.95 | −0.02 | 0.00 | 0.04 | 0.01 | 0.98 | 0.98 | 0.96 | 0.95 | −0.02 | 0.00 |
| PM=0.5 | 0.23 | 0.00 | 0.93 | 0.99 | 0.93 | 0.96 | −0.03 | 0.00 | 0.23 | 0.00 | 0.92 | 0.99 | 0.92 | 0.96 | −0.03 | 0.00 | 0.09 | 0.01 | 0.97 | 0.98 | 0.93 | 0.96 | −0.02 | 0.00 |
| PM=0.8 | 0.30 | 0.01 | 0.93 | 0.98 | 0.91 | 0.96 | −0.04 | 0.00 | 0.31 | 0.01 | 0.92 | 0.98 | 0.91 | 0.96 | −0.04 | 0.00 | 0.08 | 0.01 | 0.97 | 0.98 | 0.96 | 0.96 | −0.02 | 0.00 |
PM: Proportion Missing; Setup 2: Average SEs equivalent to between-study SDs. Setup 3: Average SEs one-tenth the size of between-study SDs. Reminder: Hierarchical Conditional Prior conditions on one continuous simulated trial-level summary variable. Letters (e.g. (d)) displayed correspond to those used to define missing data handling strategies introduced in-text.