Table 2.

Reference values of recommended tools for assessment of clinical manifestations.

Tools	Reference values
ADL	Full score of 64 points, <16 points is completely normal. Score of 2-4 points for single items indicates decrease of function. Score of ≥3 points on 2 or more items or a total score ≥22 points indicate obvious dysfunction.
NPI	No reference values for NPI. It is used to assess 12 behavioral disturbances. Both the frequency and severity of each behavior are determined.
MMSE	Full score of 30 points. For illiterate group ≤17 points, primary school group ≤20 points, high school or above group ≤24 points indicates cognitive impairment.

ADL, Activities of daily living; NPI, Neuropsychiatric Inventory; MMSE, Mini-Mental Status Examination.