The Nurse Studies the Association of Lead Poisoning with Residence

Multiple Choice

The nurse studies the association of lead poisoning with residence in a home that was built before 1970. Which needs to be established to show an association between these two variables?

A) A statistical relationship between lead poisoning and residence in a home built before 1970
B) That the presence or absence of residence in a home built before 1970 determines the presence or absence, respectively, of lead poisoning
C) A relative risk of 1
D) A p value >0.1