 Olfactory function was assessed on persons aged 40 years and older with an 8-item, odor identification test (Pocket Smell Tests™, Sensonics, Inc., Haddon Heights, NJ).Odors included food odors (strawberry, chocolate, onion, grape), warning odors (natural gas, smoke) and household odors (leather, soap).Olfactory function score was based on the number of correct identifications.