of either of the nutrients; the first quintile contains the 20% of people with the lowest intake, and the 5th quintile contains the 20% with the highest intake. The researchers then computed how often people in each of those groups died during the time they were being followed. The figure expresses this in terms of the <em>relative risk</em> of dying in comparison to the lowest quintile: If this number is greater than one, it means that people in the group are <em>more</em> likely to die than are people in 