- Laboratory test (basic): AST, ALT, glucose, BUN, creatinine, Na, K, Cl, LDH, CPK
- Laboratory test (add): Cholesterol, HDL-cholesterol, LDL-cholesterol, triglyceride, homocysteine, T3, free T4, TSH
- ECG: electrocardiogram
- ISI-K Insomnia Severity Index-Korean, SCD-Q Subjective Cognitive Decline Questionnaire, KDSQ-C Korean Dementia Screening Questionnaire-Cognition, SNSB-D Seoul Neuropsychological Screening Battery-Dementia version, S-GDS = Korean version of Short form Geriatric Depression Scale, PSQI-K Pittsburgh Sleep Quality Index-Korean, SF-36 36-item MOS Short Form Survey