Table 2.

Factor analysis and classification of BPSD symptom clusters (N = 170)

Cluster	Symptom	Factor 1	Factor 2	Factor 3
Symptom cluster 1 Hyperactivity symptoms	Disinhibition	0.87
	Irritability	0.84
	Agitation/aggression	0.75
Symptom cluster 2 Psychosis symptoms	Hallucinations		0.71
	Anxiety		0.70
	Elation/euphoria		0.70
	Delusions		0.64
	Depression/dysphoria		0.54
Symptom cluster 3 Physical behaviour symptoms	Appetite and eating abnormalities			0.84
	Apathy/indifference			0.65
	Aberrant motor behaviour			0.59
	Sleep and night-time behaviour disturbances			0.44
Cronbach’s α		0.85	0.77	0.68
Eigen values		2.85	2.62	2.02
Explained variance (%)		23.7	21.8	16.8
Cumulative variance (%)		23.7	45.5	62.3