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J Am Med Dir Assoc. 2000 May-Jun;1(3):114-6.

The quality of life in late-stage dementia (QUALID) scale.

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1
Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas 75235-9070, USA.

Abstract

OBJECTIVES:

To develop a valid and reliable instrument for rating quality of life in persons with late-stage Alzheimer's disease and other dementing illnesses.

DESIGN:

A group of clinicians with extensive experience in dealing with dementia patients developed by consensus the Quality of Life in Dementia Scale (QUALID), an 11-item scale. The window of observation for each subject was 7 days. A 5-point scale captured the frequency of each item (total score ranging from 11 to 55). Lower scores reflected a higher quality of life (QOL). Validity was assessed by comparison with other measures.

SETTING:

Dementia special care unit.

PARTICIPANTS:

Professional caregivers of 42 patients.

MEASUREMENTS:

QUALID, Mini-Mental State Exam (MMSE), Physical Self-Maintenance Scale (PSMS), Neuropsychiatric Inventory (NPI), and Geriatric Depression Scale (GDS).

RESULTS:

QUALID scores ranged from 12 to 45 points and were skewed toward higher QOL (lower scores). Internal consistency of items was high, as were test-retest reliability and consistency across recorders. As expected, there was no relationship between QUALID and MMSE or PSMS scores, but there was a statistically significant, although moderate, relationship between QUALID and NPI, and GDS scores.

CONCLUSION:

The QUALID is a reliable and valid scale, administered to caregivers, for rating QOL in persons with late-stage dementing illness.

PMID:
12818023

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