Biology Forums - Study Force

The nurse researcher's study design includes an experimental group and a control group. After the study begins, the researcher finds that 60 percent of the experimental group and 75 percent of the control group have dropped out of the study. Because of the internal threat of mortality, the researcher abandons the study. In future studies, what could the researcher do to help prevent this problem?
 
  1. Have the participants sign a pledge to continue in the project prior to inclusion in the study group.
  2. Call each of the participants who dropped out and insist that each honors his or her commitment to the study.
  3. Allow a longer time for the study.
  4. Try to establish a relationship with the participants.

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