IUD Study Updates

We are recommending that all sites who are interested in participating try to run both sets of T/Cs. The original study was appropriate for the Columbia data, but on testing in a large US claims data was determined to not correctly classify exposure, so the alternative T/Cs were created, which when tested back at Columbia, did not perform consistently with the original T/C definitions. So, we have prepared two packages as a means of performing a sensitivity analysis around exposure definition to evaluate robustness of the findings.

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