A Nurse Researcher Is Planning a Quantitative (Experimental) Research Study

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

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

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