Underlying mechanism for having a SDH during follow-up in a total of 440,742 men followed for a median of 35 y.

HR are presented per SD decrease in cognitive performance according to underlying mechanism and in total. HRs for education are presented for those with more than 11 y of school with those with less than 9 y of school as reference, and per SD increase for physical fitness. The models were adjusted for age, conscription year, and place.