A Nurse Researcher Is Planning a Quantitative Study to Test

A nurse researcher is planning a quantitative study to test the effect of a new wound product on wound healing.What factors are necessary to implement an experimental pretest-posttest design? (Select all that apply.)

A) Inclusion of a second control group
B) Pretest data can be collected
C) Use of two posttreatment data collection times
D) Subjects randomized to only the control group
E) Random assignment of subjects to treatment and control groups

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