A research team is evaluating the accuracy of a new clinical…
A research team is evaluating the accuracy of a new clinical balance screening test used in outpatient neurorehabilitation to identify individuals at risk for falls after traumatic brain injury (TBI).In the published methods section, the authors state: “All participants who screened positive on the new balance test were referred for a comprehensive gold-standard posturography assessment. Due to clinic scheduling limitations, only 22% of participants who screened negative on the new test were sent for the gold-standard assessment. The remainder were assumed to be true negatives.” Based on this excerpt, which form of bias is MOST likely to affect the study’s reported diagnostic accuracy?