In a case-control study of the association between vitamin D intake and diabetes, investigators are concerned that some study participants may have forgotten to report using vitamin D supplements, but that this problem occurred equally among cases and controls. What potential issue is present, if any?

Anurse is teaching about a new prescription for infliximab to a client who has rheumatoid arthritis. which of the following information should the nurse include in the teaching? a. “you will receive a mantoux test before the initial medication dose.” b. “you might experience diarrhea during the first 2 weeks of treatment.” c. “you will receive the medication every week for 6 weeks.” d. “you should receive the intranasal influenza vaccine.”