RESULTS	The multivariate adjusted relative risk ( 95 % confidence interval [ CI ] ) of substantial cognitive decline on the MMSE in participants who were severely serum 25 ( OH ) D deficient ( levels < 25 nmol/L ) in comparison with those with sufficient levels of 25 ( OH ) D ( > / = 75 nmol/L ) was 1.60 ( 95 % CI , 1.19-2 .00 ) .\