SD	standard deviation
PAQUID	Personnes Agées QUID epidemiological study of cognitive and functional ageing
MMSE	Mini-mental state examination
AD	Alzheimer’s disease
DSM-III-R	Diagnostic and Statistical Manual of Mental Disorders, third edition, revised
HR	Hazard ratio
CI	confidence interval
FFQ	food frequency questionnaire
DSM-IV	Diagnostic and Statistical Manual of Mental Disorders, fourth edition
NINCDS-ADRDA	National Institute of Neurological and Communicative Disorders and Stroke/Alzheimer’s disease and related disorders association criteria
aOR	adjusted OR
cMMSE	change of mini-mental state examination
ICD	international classification of disease
CERAD	the Consortiumto Establish a Registry for Alzheimer’s Disease
MCI	mild cognitive impairment
PR	prevalence ratio