Table 1.
Clinical Characteristic | |
---|---|
Number of subjects | 12 |
Age, mean ± SD (range) | 88 ± 7.6 (70–98) |
Sex, n (%) | |
Men | 2 (16.7) |
Women | 10 (83.3) |
Underlying disease, n (%) | |
Alzheimer’s disease | 3 (25.0) |
Vascular dementia | 8 (66.7) |
Dementia with Lewy bodies | 1 (8.3) |
MMSE-J score, n (%) | |
24–27 (MCI) | 2 (16.7) |
10–23 (mild to moderate) | 6 (50.0) |
0–9 (severe) | 4 (33.3) |
Complication a, n (%) | |
Hypertension | 8 (66.7) |
Diabetes | 2 (16.7) |
Hyperuricemia | 1 (8.3) |
Concomitant drug a, n (%) | |
Antihypertensive drug | 8 (66.7) |
Drug for hyperuricemia | 2 (16.7) |
Antidiabetic drug | 1 (8.3) |
Drug for dementia | 1 (8.3) |
Activities of daily living | |
Independence | 0 (0.0) |
Some assistance is necessary | 12 (100) |
Usual tea consumption | |
Green tea, n (%) | 12 (100) |
Mean ± SD, mL/day | 680 ± 229.8 |
Others b, n (%) | 8 (66.7) |
Mean ± SD, mL/day | 85 ± 63.7 |
Alcohol use, n (%) | 0 (0.0) |
Smoking, n (%) | 2 (16.7) |
Dietary supplements, n (%) | 0 (0.0) |
MMSE-J, Mini-Mental State Examination Japanese version; MCI, Mild cognitive impairment. a More than one choice was possible, b black tea or oolong tea.