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Table 1 Framework for pooling datasets into a real-world comparator cohort

From: Considerations for pooling real-world data as a comparator cohort to a single arm trial: a simulation study on assessment of heterogeneity

Step

Subcomponent steps

1. Pre-specification

a. A priori research question and processes for statistical analyses and dataset selection

2. Assess dataset eligibility

a. Assess metadata of all datasets & variables for clinical relevance, reliability, and harmonizability

b. Quantitatively assess non-outcome characteristics and sample size after cohort selection

c. Determine the eligibility for the final pooled analysis of each dataset according to the prespecified process

3. Outcomes analyses

a. Primary analyses

b. Assessment of heterogeneity in outcomes

c. Sensitivity analyses