Factor

% variance
1 2 3
Psychotic
depression
Disruptive
behaviors
Rhythm
disturbance
33.6% 20.7% 15.7%
Delusions #.812 .223 -.078
Hallucinations #.728 .007 .177
Activity disturbance -.108 #.889 -.120
Aggressiveness #.524 #.665 268
Rhythm disturbance -.003 -.005 .940
Affective disturbance #.494 -.002 .370
Anxiety #.739 -.412 -.193
LP 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 disturbances, anxiety: anxieties and phobias
#: symptoms with a factor loading≥.400

Table 5: Results of varimax rotation factor analysis of BEHAVE-AD items in the LP group.