Administration of the test formulation for a period of 12 months was effective in improving cognitive functions in the SDAT patients , when compared to the donepezil-treated group , as determined by the DSS ( 38.984 3.016 vs 35.852 4.906 , P = 0.0001 ) , word recall immediate ( 3.594 1.003 vs 2.794 0.593 , P < 0.0001 ) and attention span ( 4.918 1.239 vs 4.396 0.913 , P = 0.0208 ) scores .