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R K Hambleton

Publications and source records attributed to R K Hambleton.

4 recordsLinked to original sources
PubMed2000

Emergence of item response modeling in instrument development and data analysis.

In summary, readers are encouraged to read carefully the IRT articles in this special issue. They provide theoretical as well as practical arguments in favor of using IRT models in the health outcomes measurement field. At the same time, readers should be aware that the IRT field is complex and software is limited and, in my judgment, not very user friendly (although some packages are better than others). In addition, sample sizes will often need to be larger than in classical measurement, at least with the more general IRT models, and applications are rarely straightforward. Considerable practical experience is needed to ensure successful applications of IRT in the development and validation of instruments for health outcomes measurement.

Data Interpretation, Statistical↗
PubMed1996

Development of the multidimensional index of life quality. A quality of life measure for cardiovascular disease.

OBJECTIVES: The purpose of this study was to design a multidimensional measure of health-related quality of life appropriate for patients with cardiovascular disease that was psychometrically sound, brief, and easy to administer. METHODS: Qualitative interviews conducted with healthy subjects and patients with cardiovascular diseases identified nine major quality of life domains. Based on the responses of 129 cardiovascular disease patients recruited from hospitals and clinics, a criterion-based approach was used to select 35 questionnaire items that best tapped these domains. Psychometric properties of the Multidimensional Index of Life Quality (MILQ) were tested with a sample of 348 patients with various cardiovascular diseases. RESULTS: Cronbach's alpha was 0.76 or higher for eight of the nine MILQ domains. Test-retest reliability coefficients were 0.73 or greater in all but two domains. Individual domain scores as well as a weighted overall quality of life index were correlated highly with self-assessed health and the number of heart-related symptoms. CONCLUSIONS: The Multidimensional Index of Life Quality is a psychometrically reliable and valid instrument for measuring quality of life in patients with cardiovascular diseases. The MILQ also may be a suitable measure for other types of chronic diseases.

Adult↗
PubMed1983

A framework for viewing the process of standard setting.

The standard-setting literature is filled with contributions in which issues associated with standards are discussed and various methods for setting standards are presented and reviewed. Almost no attention has been given to guidelines for helping standard-setting groups or committees address the issues and technical matters that arise in selecting and implementing a standard-setting method and finally setting a standard (or standards). This article was prepared to describe sets of context-setting variables and technical matters associated with standard-setting to assist groups or committees desiring to set standards in a systematic way.

Certification↗