Sociodemographic, lifestyle and health characteristics of reverters and non-reverters at baselinea.

BMI = body mass index; BP = blood pressure; BSIT = Brief Smell Identification Test; eGFR = estimated glomerular filtration rate; GAS = Goldberg Anxiety Scale; GDS = Geriatric Depression Scale.aData presented as No. (%) unless otherwise indicated.bMaximum n, with small amounts of missing data for some factors.cAny of cardiac arrhythmia, cardiomyopathy, or heart valve disease.dAverage days/week of participation in mental activities.eNumber of different physical activities participated in.fArbitrary units, averaged for the two eyes.