Biostatistics & Study Design USMLE Step 1 Practice Question
A 58-year-old man with type 2 diabetes mellitus presents for device validation testing. Blood pressure is 138/82 mmHg, heart rate 76/min, temperature 37.2°C. A fasting glucose obtained via new handheld glucometer reads 156 mg/dL; simultaneous central laboratory reference assay measures 158 mg/dL. HbA1c is 7.8%. He denies recent hypoglycemic episodes. Investigators compare multiple paired readings from both methods to determine consistency between devices. Which measurement property are they evaluating?
Answer choices
- ACriterion validityCorrect answer
- BLead time bias
- CConstruct validity
- DAttrition bias
- EInternal consistency
- FInterrater reliability
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