Therefore, the investigator needs to know which threats to internal validity are associated with which research designs and the sources of bias associated with particular aspects of study execution.
More information: Nao Hagiwara, The nature and validity of implicit bias training for healthcare providers and trainees: A ...
Difference is probably due to the effects of confounding factors or bias; stop here. 3. External validity Examine inclusion and exclusion criteria and characteristics of study participants.
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