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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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Stoscano Stoscano
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6 years ago
A study that is examining healthcare workers' adherence to standard infection-control precautions began shortly before an outbreak of Clostridium difficile. This outbreak of C.
 
  diff constitutes what type of threat to the internal validity of the study?
  A) History
  B) Testing
  C) Externality
  D) Construct
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JiminieJiminie
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6 years ago
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Stoscano Author
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6 years ago
this is exactly what I needed
apelton
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Yesterday
Brilliant ツ
logbi
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2 hours ago
Good timing, thanks!
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