A research study is planned to determine the effect of nutritional supplementation and type of support surface on the rate of wound healing in sacral myocutaneous flap failures. Which is an independent variable in this study? (Select all that apply.)
A) Rate of wound healing
B) Sacral myocutaneous flap
C) Retailer source of protein supplement
D) Type of support surface
E) Nutritional supplementation

Question

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The Answer of A research study is planned to determine the effect of nutritional supplementation and type of support surface on the rate of wound healing in sacral myocutaneous flap failures. Which is an independent variable in this study? (Select all that apply.)
A) Rate of wound healing
B) Sacral myocutaneous flap
C) Retailer source of protein supplement
D) Type of support surface
E) Nutritional supplementation

A Research Study Is Planned to Determine the Effect of Nutritional