Factors associated with deterioration of self-rated chewing ability among adults aged 60 years and older over a 6-year period.

Aim: To assess factors associated with the deterioration of self-rated chewing ability among adults aged 60 years and older over a 6-year period.

Methods: We carried out a case-control study nested in a cohort involving 890 individuals living in the city of Sao Paulo from 2000 to 2006. The outcome was the reduction of self-rated chewing ability.