Task: Answer Verification
Input (English): Question: Is proteinuria testing among patients with diabetes mellitus associated with bladder cancer diagnosis : potential for unmeasured confounding in studies of pioglitazone and bladder cancer?
Answer: Proteinuria testing may be a confounder in studies of pioglitazone and bladder cancer but does not fully explain the association between pioglitazone and bladder cancer in this cohort. Optimal adjustment for proteinuria testing likely requires knowledge of the test result.
Output (English): yes