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?

Question

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The independent variables in this study are the factors that are being manipulated and are expected to influence the rate of wound healing. The type of support surface and nutritional supplementation are the two independent variables in this study, as they are being varied to determine their effect on the rate of wound healing. The sacral myocutaneous flap is not being manipulated and is therefore not an independent variable. The source of protein supplement is not mentioned as a factor being manipulated and is therefore not an independent variable.

A Research Study Is Planned to Determine the Effect of Nutritional