From: Do MCI patients with vitamin B12 deficiency have distinctive cognitive deficits?
MCI vitamin B12 deficiency (n=15) | MCI normal vitamin B12 (n=45) | P- value | |
---|---|---|---|
Age, years [mean ± SD (range)] | 74.9±7.6 | 74.9±6.9 | 1.00‡ |
Sex, female/male (n) | 7/8 | 22/23 | 1.00† |
Formal education, years (mean ± SD) | 6.7±4.6 | 7.4±4.8 | 0.66‡ |
Vitamin B12 level, pg/mL (mean ± SD) | 148.4±42.7 | 496.9±218.9 | <0.001‡* |
Duration of cognitive complaints (mean ± SD) | 1.2±1.0 | 3.4±3.0 | <0.001‡* |
Depressive symptoms, geriatric depression scale (mean ± SD) | 3.6±1.5 | 4.1±2.9 | 0.59‡ |
Drugs with possible effect on cognition (n) | 0 | 5 | 0.32† |
Response to vitamin B12 therapy, Yes/No/Unknown (n) | 0/14/1 | NA |