Reliability and construct validity of the Early Dementia Questionnaire (EDQ)

BMC Geriatrics

Table 5 Correlation between items and items’ construct total score

Subdomain	Memory	Concentration	Physical and emotional symptoms	Sleep and environment
Item	Memory	Concentration	Physical and emotional symptoms	Sleep and environment
Require check list as memory support	0.565**
Difficulty in remembering events that took place in the past 1 week (recent memory)	0.680**
Unable to find kept item	0.708**
Difficulty in remembering names/familiar faces	0.730**
Difficulty in remembering familiar road directions	0.657**
Repetitive questioning	0.514**
Difficulty in following conversation		0.737^**
Difficulty understanding reading		0.804^**
Difficulty following stories on television		0.809^**
Difficulty carrying out daily house chores/work/hobby			0.620^**
Difficulty in taking care/personal hygiene or using the toilet			0.446^**
Disrupted movement (physical restlessness)			0.758^**
Unsuitable reaction towards external stimuli (example: telephone ringing - emotional outburst)			0.712^**
Obsession towards emotional event, although it has taken place long time ago (example: death of family member or friend)			0.575^**
Not interested in surroundings			0.655^**
Looking for support/assurance from partner			0.743^**
Night-day rhythm disruption			0.371^**
Restlessness at night				0.807^**
Confusion after moving houses/in a new environment				0.674^**
Outsiders aware of changes in term of behavior / appearance				0.675^**

**P value was significant at <0.05 | The Pearson’s correlation coefficient is shown

ISSN: 1471-2318