Question
Answered step-by-step
Asked by mhmmdzdh
A randomized controlled trial conducted testing an intervention to reduce opioid treatment in the ER was conducted with a convenience sample of 312 participants recruited from an ER in Shelbyville, Kentucky. Which type of bias is the largest threat to this study’s internal validity?
 A. Selection
 B. Historical
 C. mortality
 D. Testing
SCIENCE
HEALTH SCIENCE
NURSING