23:1223:12, 12 December 2012diffhist−247
Spinal stenosis
→Epidemiology: This is mathematically dubious. In order for this to happen, 4 out of 5 people with spinal stenosis must die or get better between the ages of 50 and 65. Going from 5 out of 1000 to 1 out of 1000 just doesn't make sense at these ages.