RT Journal
A1 Ramaraj R, Chellappa P
T1 MEditerranean diet and cognitive decline
JF JAMA
JO JAMA
YR 2009
FD December 9
VO 302
IS 22
SP 2432
OP 2432
DO 10.1001/jama.2009.1792
UL http://dx.doi.org/10.1001/jama.2009.1792
AB 
First, the study participants were not blinded, and using the 24-hour dietary recall introduced potential recall bias because participants might recall differently depending on their disease status.2 Second, using MMSE as a scale for assessing cognitive function may not have been an optimal choice. A study using the French versions of the Severe Impairment Battery and MMSE in 69 patients with probable Alzheimer disease concluded that the Severe Impairment Battery was better able to discriminate among patients who had scores lower than 11 points on the MMSE.3 Third, accuracy of the MMSE depends on the educational status of the individual.4 Fourth, accuracy of the MMSE has also been shown to vary based on age.5