In a study to determine whether tonsillectomy is associated with subsequent development of Hodgkin's disease, the estimated relative risk for those with prior
Tonsillectomy was found to be 1.9.From this we can conclude:

Question

Quizplus · Accepted Answer

The incidence of Hodgkin's disease is higher among those who have had a
prior tonsillectomy than among those who have not had a tonsillectomy.We cannot
make any claims about the case fatality rate from this information (A).As the relative
risk is greater than 1.0 for those who have had tonsillectomy it does not appear that
tonsillectomy protects against Hodgkin's disease, if anything the opposite appears to be
true (C).We would want much more information before concluding that tonsillectomy
was causally related to Hodgkin's disease (D).Furthermore, even if the relation were
causal, we would still need to balance the potentially large benefits of tonsillectomy
against the possible small increase in risk of a rare disease before deciding whether the
procedure should be performed.

In a Study to Determine Whether Tonsillectomy Is Associated with Subsequent