Inclusion Criteria:  Aged 20 years or older and staying in an intensive care unit. Patients within 24 hours of admission (Acute Physiology And Chronic Health Evaluation, APACHE II score) ≦25 points. Can express their intentions by writing or shaking their heads. Can communicate in Mandarin, Taiwanese, Hakka or English. After explaining the purpose of the research, agree to participate and fill out the consent form.  Exclusion Criteria:  Dementia or mental illness are recorded