A major disadvantage of epidemiological studies is that: a: they identify patterns in diseases that may be traced to causative factors.
b: ethical considerations may limit their usefulness.
c: considerable human exposure can take place before a toxic affect is detectable.
d: it is difficult to generate sufficiently reliable data.

Anurse is teaching a newly licensed nurse about safe medication administration. the nurse should instruct that which of the following actions is included in the 6 rights of medication administration? a. verify dosage calculation with a second nurse. b. obtain a current list of the client’s medications. c. document medication prior to administration. d. compare a new prescription with an old prescription.