Responsible Conduct in Data Management
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After retraining staff, return to the field and attempt to re-collect the necessary data.
Decision Tree
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This is the most costly decision because it requires either re-contacting the original participants to collect the necessary data or recruiting additional participants.

These are some possible outcomes:

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The research staff is able to contact about 90% of the original participants, and about 3/4 of those agree to come in for additional testing.
select2 button

The research staff is able to contact about 75% of the original participants, and only about half of those agree to come in for additional testing.

select3 button

The research staff is able to contact about 50% of the original participants, and only about 10% of those agree to come in for additional testing. The decision is made to begin additional recruitment.