Assessing Measurement Properties of Two Single-Item General Health Measures

Background: Multi-item health status measures can be lengthy, expensive, and burdensome to collect. Single-item measures may be an alternative. We compared measurement properties of two single-item, general self-rated health (GSRH) questions to assess how well they captured information in a validate...

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Bibliographic Details
Published in:Quality of life research 2006-03, Vol.15 (2), p.191-201
Main Authors: DeSalvo, Karen B., Fisher, William P., Tran, Ky, Bloser, Nicole, Merrill, William, Peabody, John
Format: Article
Language:English
Subjects:
Adult
Aged
Calibration
Emotional expression
Emotional problems
Female
Health outcomes
Health Status
Health surveys
Humans
Instrument Development and Evaluation
Male
Middle Aged
Mortality
Psychometrics
Quality of life
Reproducibility
Statistical variance
Studies
Surveys and Questionnaires - standards
United States
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Summary:Background: Multi-item health status measures can be lengthy, expensive, and burdensome to collect. Single-item measures may be an alternative. We compared measurement properties of two single-item, general self-rated health (GSRH) questions to assess how well they captured information in a validated, multi-item instrument. Methods: We administered a general health survey (SF-12V) that included "standard" and "comparative" forms of a GSRH. We repeated the survey two weeks later to the same 75 medically stable outpatients to test for GSRH reproducibility, reliability, and validity using SF-12V Physical Functioning and Emotional Health subscales as a reference. Results: At each survey administration, the two GSRH questions demonstrated good alternate forms reliability (first administration: r=0.74, p
ISSN:0962-9343
1573-2649
DOI:10.1007/s11136-005-0887-2