Assertion: bias | /r/HasAspect | major impact
Facets:
value: in other studies
type: LOCATION
Source sentences:
text: However, in other studies that are conducted in difficult circumstances (e.g., a prospective cohort study in a homeless population in which one would expect difficulty maintaining follow-up) or in poorly designed studies, biases may have a major impact and produce large overestimates or underestimates of the true association.