To ensure a sufficient number of cases from strata of varying sizes, researchers use: a. simple random sampling.
b. systematic sampling.
c. quota sampling.
d. proportionate sampling.
e. disproportionate sampling.

Opium, methamphetamine, and cocaine are in the united states.

Anurse is caring for a client who has nicotine use disorder and asks about taking varenicline. the nurse should identify that which of the following conditions is a contraindication for this medication? a. rheumatoid arthritis b. copd c. anorexia nervosa d. major depressive disorder

Anurse is assessing for allergies for a client who is scheduled to receive the influenza vaccine. which of the following allergies should the nurse identify as a contraindication for this vaccine? a. peanuts b. eggs c. shellfish d. milk