Statins for 5 yrs with known heart disease
 

Statins Given for 5 Years for Heart Disease Prevention (With Known Heart Disease)
83 for mortality
In Summary, for those who took the statin for 5 years:

Benefits in NNT

1 in 83 were helped (life saved)
1 in 39 were helped (preventing non-fatal heart attack)
1 in 125 were helped (preventing stroke)
Harms in NNH

1 in 50 were harmed (develop diabetes*)
1 in 10 were harmed (muscle damage)

http://www.thennt.com/nnt/statins-fo...heart-disease/