So, treating enough people to prevent one heart attack
costs $500,000 per year. Since about 70% of
attacks were not fatal, prevention of
a single death from heart attack would cost even more, approximately $1,700,000. Giving the benefit of the doubt, we may allow for a similar reduction in stroke and say that "only" $250,000 is needed to protect one person from a stroke or heart attack. It is hardly surprising that Astra Zeneca's share price increased by $1.