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A researcher wishes to use logistic regression to examine the relationship betwe

ID: 3229675 • Letter: A

Question

A researcher wishes to use logistic regression to examine the relationship between pressure ulcers and Braden scale score, immune function status, and repositioning schedule. Which example of a measure of pressure ulcers would be an appropriate for this technique? Select one: a. Swab, fluid aspiration, and tissue biopsy sample b. Stage I, Stage II, Stage III, and Stage IV levels of full thickness tissue loss c. Present or not present d. Length and depth measurement A researcher completes a study examining the relationship between exposure to cold, smoking status, and Raynaud phenomenon (RP), and finds both independent variables are significantly related to RP. In fact, she reports that 76% of the variation in the occurrence of RP can be explained by these two variables. You this means: Select one: a. The model that includes both variables has an R square value of approximately 0.76. b. The model that includes both variables has an OR that is approximately 0.76. c. Adding the second variable to the model produced the significant results. d. The residuals in this model are very low resulting in a significant finding for both variables.

Explanation / Answer

12.

76% of the variation in the occurence

The amount of variance is given by Rsquare

Therefore, the answer is a. The model that includes both variables has an
R square value of approximate of .76

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