Statistical Methods and Scholarly Inquiry

Are Adolescent cancer patients who receive chemotherapy treatment compared to those who do not at risk for cognitive deficits and/or decreased academic performance as young adults?
1 . Would you get your data retrospectively or prospectively, and why? A response of 3 sentences is maximum.
2. List some threats to validity of your study (internal or external) or credibility, confirmability threats if a qualitative design. A response of 12 bulleted threats is maximum. You may not be able to come up with 12, that is fine.

 

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