Factor % variance 1 2 3 Disruptive behavior Depression Psychosis 30.4% 26.6% 18.2% Delusions -.073 -.069 #.826 Hallucinations .188 .117 #.852 Activity disturbance #.749 -.301 -.217 Aggressiveness #.854 -.013 .052 Rhythm disturbance #.733 .085 .060 Affective disturbance .003 #.930 .060 Anxiety -.133 #.897 .002 HP group: Alzheimer’s disease patients whose MMSE scores were ≥12. AD: Alzheimer’s disease BEHAVE-AD: behavioral pathology in Alzheimer’s disease rating scale delusions: paranoid and delusional ideation, rhythm disturbance: diurnal rhythm disturbance, anxiety: anxieties and phobias #: symptoms with a factor loading≥.400

Table 4: Results of varimax rotation factor analysis of BEHAVE-AD items in the HP group.

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