4.30 What is the probability that among 10 true hyperten- sives at least 50% are being treated appropriately and are complying with this treatment? 4.31 What is the probability that at least 7 of the 10 hyper- tensives know they have high blood pressure? 4.32 If the preceding 50% rates were each reduced to 40% by a massive education program, then what effect would this change have on the overall mortality rate among true hypertensives; that is, would the mortality rate decrease and, if so, what percentage of deaths among hypertensives could be prevented by the education program?
Hypertension
A national study found that treating people appropriately for
high blood pressure reduced their overall mortality by 20%.
Treating people adequately for hypertension has been dif-
ficult because it is estimated that 50% of hypertensives do
not know they have high blood pressure, 50% of those who
do know are inadequately treated by their physicians, and
50% who are appropriately treated fail to follow this treat-
ment by taking the right number of pills.
4.30 What is the
sives at least 50% are being treated appropriately and are
complying with this treatment?
4.31 What is the probability that at least 7 of the 10 hyper-
tensives know they have high blood pressure?
4.32 If the preceding 50% rates were each reduced to
40% by a massive education program, then what effect
would this change have on the overall mortality rate among
true hypertensives; that is, would the mortality rate decrease
and, if so, what percentage of deaths among hypertensives
could be prevented by the education program?
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