A Nurse Researcher Is Conducting an Experimental Study on Self-Care

A nurse researcher is conducting an experimental study on self-care behaviors of subjects related to hygienic practices when dining in restaurants.Which of the following characteristics or factors could be antecedent or intervening variables? (Select all that apply.)

A) Subjects' ethnicity
B) Location of the restaurants
C) A recent change in health status
D) Subjects' educational level

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