Biostatistics & Study Design USMLE Step 1 Practice Question
A longitudinal diabetes study has intermittent missing hemoglobin A1c values because some patients miss clinic appointments but later return. Investigators use patients' prior A1c levels, medication use, age, and other observed variables to estimate several plausible values for each missing entry and then combine the results across completed datasets. Which method is being used?
Answer choices
- AMultiple imputationCorrect answer
- BBonferroni correction
- CBlock randomization
- DOvermatching
- EListwise deletion
- FLast observation carried forward
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