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Ettema, T. P., Dröes, R. M., de Lange, J., Mellenbergh, G. J., & Ribbe, M. W. (2007). QUALIDEM: development and evaluation of a dementia specific quality of life instrument. Scalability, reliability and internal structure. Int J Geriatr Psychiatry, 22(6), 549-556. doi: 10.1002/gps.1713.
General information
Purpose The QUALIDEM is a proxy-based measure designed to measure quality of life among individuals with dementia who live in residential settings.
Domain(s) Life Satisfaction
Positive Affect
Quality of Life
Target population Adult
Number of items 40
Administration format proxy-report
Additional formats
Alternate forms
Availability in other languages Original language was Dutch, also available in English & German
Fee for use
Related information on use of the measure

The QUALIDEM can be found here.

Non-exhaustive list of psychometric studies

Dichter, M. N., Schwab, C. G. G., Meyer, G., Bartholomeyczik, S., & Halek, M. (2016). Item distribution, internal consistency, and inter-rater reliability of the German version of the QUALIDEM for people with mild to severe and very severe dementia. BMC Geriatrics, 16(1) doi:10.1186/s12877-016-0296-0

Dichter, M. N., Schwab, C. G. G., Meyer, G., Bartholomeyczik, S., Dortmann, O., & Halek, M. (2014). Measuring the quality of life in mild to very severe dementia: Testing the inter-rater and intra-rater reliability of the German version of the QUALIDEM. International Psychogeriatrics, 26(5), 825-836. doi:10.1017/S1041610214000052

Gräske, J., Verbeek, H., Gellert, P., Fischer, T., Kuhlmey, A., & Wolf-Ostermann, K. (2014). How to measure quality of life in shared-housing arrangements? A comparison of dementia-specific instruments. Quality of Life Research, 23(2), 549-559. doi:10.1007/s11136-013-0504-8

Hüsken, J. -., Reuther, S., Halek, M., Holle, D., & Dichter, M. N. (2019). Internal consistency and construct validity of the quality of life measurement in dementia QUALIDEM - A secondary data analysis of cross-sectional data. [Interne Konsistenz und Konstruktvalidität des demenzspezifischen Lebensqualitätsinstruments QUALIDEM: Eine Sekundärdatenanalyse einer Querschnittserhebung] Pflege, 32(5), 235-248. doi:10.1024/1012-5302/a000689

Additional information

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