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Selected Works of Michael Lock
Article
Psychometric Properties of a Prostate Cancer Radiation Late Toxicity Questionnaire
Health and Quality of Life Outcomes
  • George Rodrigues, University of Western Ontario
  • Glenn Bauman, University of Western Ontario
  • Michael Lock, University of Western Ontario
  • David D'Souza, University of Western Ontario
  • Jeff Mahon, University of Western Ontario
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Document Type
Article
Publication Date
5-31-2007
Disciplines
Abstract

Background: To construct a short prostate cancer radiation late toxicity (PCRT) questionnaire with health-related quality-of-life (HRQoL) domains.

Methods: The PCRT was developed by item generation, questionnaire construction (n = 7 experts, n = 8 focus group patients), pilot testing (n = 37), item reduction (n = 100), reliability testing (n = 237), and validity testing (n = 274).

Results: Reliability of the three item-reduced subscales demonstrated intraclass correlation coefficients (CC) of 0.811 (GU), 0.842 (GI), and 0.740 (sexual). Discriminant validity demonstrated Pearson CC of 0.449 (GU-GI), 0.200 (sexual-GU), and 0.09 (sexual-GI). Content validity correlations between PCRT-PCQoL were 0.35-0.78, PCRT-FACT-G(c) were 0.19-0.39, and PCRT-SF-36(R) were 0.03-0.34.

Conclusion: We successfully generated a PCRT HRQoL questionnaire including subscales with very good psychometric properties.

Notes
Published in: Health and Quality of Life Outcomes, 2007, 5:29. doi: 10.1186/1477-7525-5-29
Citation Information
George Rodrigues, Glenn Bauman, Michael Lock, David D'Souza, et al.. "Psychometric Properties of a Prostate Cancer Radiation Late Toxicity Questionnaire" Health and Quality of Life Outcomes Vol. 5 Iss. 29 (2007)
Available at: http://works.bepress.com/michael_lock/1/