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Table 4 Factor structure representing the relationships between behavioural and psychological symptoms by cognitive classification.

From: Behavioural and psychological symptoms in the older population without dementia - relationship with socio-demographics, health and cognition

MMSE groups Factor 1 Factor 2 Factor 3 Factor 4
MMSE 18-21 mis/hal/wan/ela apa/mis/anx/dep per/irr  
MMSE 22-25 mis/hal apa/anx/dep per/irr  
MMSE 26-30 mis/hal anx/dep/(apa) per/wan/irr  
MCI classification    
Normal mis/hal anx/dep per/wan/irr  
MCI mis/hal apa/anx/dep/sle per/wan/ela/irr  
OCIND mis/hal apa/anx/dep per/irr wan/(ela)
MCI Subtypes     
A-MCI mis/hal apa/anx/dep/sle per/wan/ela/irr agi/irr
N-MCI mis/hal/anx/dep apa/sle per/irr ela/agi
M-MCI mis/hal/wan/ela apa/anx/dep irr/(per)  
Dementia (adapted from Savva et al 2009 [4]) mis/hal/con/apa/per/wan anx/dep/hal irr/per/agi agi/ela/hal/sle/wan
  1. Symptoms are included in each factor if their factor loading is >0.3 (symptoms loading >0.25 but <0.3 are shown in brackets). Key to symptoms: mis = misidentification, hal = hallucinations, wan = wandering, ela = elation, apa = apathy, anx = anxiety, dep = depression, per = feeling of persecution, irr = irritability, agi = agitated behaviour, sle = sleep problems.