Alzheimer disease and related dementia

Reference no: EM133706415

Question

A cross-sectional analysis found that prevalence of Alzheimer's disease and related dementia (ADRD) was lower among patients with higher use of statins. One researcher noted that bias may be present in the study, as ADRD diagnosis requires contact with a doctor and statins use might be associated with frequency of visiting the doctor. Based on this assessment, what type of bias may be influencing the study? [ Select ] Which of the following is a type of selection bias that occurs when the duration of the disease after onset is different between exposed and unexposed persons?

Reference no: EM133706415

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