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Fat Fat
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6 years ago
A researcher is studying the likely occurrence rate of secondary cancers after a new schedule of chemotherapy for childhood leukemia, using a biochemical marker obtained by blood draw six months after the initiation of chemotherapy.
 
  What is the rationale for using this marker as a proximate outcome, rather than counting the actual rate of secondary cancers?
  a. Research on recurrent cancers in children labels them as vulnerable, causing psychological harm.
  b. The final endpoint is not obtainable over a reasonable span of time, since secondary cancers can occur at any age.
  c. Most proximate endpoints are unreliable variables and should not be used unless there are no final endpoints.
  d. The researcher is not interested in whether children suffer a secondary malignancy; the researcher is merely interested in the marker value.
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Beehappy2Beehappy2
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Fat Author
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6 years ago
Smart ... Thanks!
kriggs62
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
Loruiz15
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2 hours ago
Thank you, thank you, thank you!
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