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Qual Life Res. 2009 Sep;18(7):889-900. doi: 10.1007/s11136-009-9506-y. Epub 2009 Jul 10.

Readability estimates for commonly used health-related quality of life surveys.

Author information

1
Department of Health Services, UCLA School of Public Health, Los Angeles, CA 90095-1772, USA. shpaz@ucla.edu

Abstract

PURPOSE:

To estimate readability of seven commonly used health-related quality of life instruments: SF-36, HUI, EQ-5D, QWB-SA, HALex, Minnesota Living with Heart Failure Questionnaire (MLHFQ), and the NEI-VFQ-25.

METHODS:

The Flesch-Kincaid (F-K) and Flesch Reading Ease (FRE) formulae were used to estimate readability for every item in each measure.

RESULTS:

The percentage of items that require more than 5 years of formal schooling according to F-K was 50 for the EQ-5D, 53 for the SF-36, 80 for the VFQ-25, 85 for the QWB-SA, 100 for the HUI, HALex, and the MLHFQ. The percentage of items deemed harder than "easy" according to FRE was 50 for the SF-36, 67 for the EQ-5D, 79 for the QWB-SA, 80 for the VFQ-25, 100 for the HUI, HALex, and the MLHFQ.

CONCLUSIONS:

All seven surveys have a substantial number of items with high readability levels that may not be appropriate for the general population.

PMID:
19590979
PMCID:
PMC2724639
DOI:
10.1007/s11136-009-9506-y
[Indexed for MEDLINE]
Free PMC Article

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