Evaluation of the Quality of Life in Adult Cancer Survivors QLACS scale for long-term cancer survivors in a sample of breast cancer survivorsReport as inadecuate




Evaluation of the Quality of Life in Adult Cancer Survivors QLACS scale for long-term cancer survivors in a sample of breast cancer survivors - Download this document for free, or read online. Document in PDF available to download.

Health and Quality of Life Outcomes

, 4:92

First Online: 01 December 2006Received: 02 August 2006Accepted: 01 December 2006

Abstract

BackgroundThis paper evaluates psychometric properties of a recently developed measure focusing on the health-related quality of life HRQL of long-term cancer survivors, the Quality of Life in Adult Survivors scale QLACS, in a sample of breast cancer survivors. This represents an important area of study, given the large number of breast cancer patients surviving many years post diagnosis.

MethodsAnalyses are based on an 8-year follow-up of a sample of breast cancer survivors who participated in an earlier study conducted in 1995. Participants were re-contacted in 2003 and those who were reachable and agreed to participate n = 94 were surveyed using a variety of measures including the QLACS. Additional follow-up surveys were conducted 2 weeks and one year later. Psychometric tests of the QLACS included test-retest reliability, concurrent and retrospective validity, and responsiveness.

ResultsThe QLACS domain and summary scores showed good test-retest reliability all test-retest correlations were above .7 and high internal consistency. The Generic Summary Score showed convergent validity with other measures designed to assess generic HRQL. The Cancer-Specific Summary score exhibited divergent validity with generic HRQL measures, but not a cancer-related specific measure. The QLACS Cancer-Specific Summary Score demonstrated satisfactory predictive validity for factors that were previously shown to be correlated with HRQL. The QLACS generally demonstrated a high level of responsiveness to life changes.

ConclusionThe QLACS may serve as a useful measure for assessing HRQL among long-term breast cancer survivors that are not otherwise captured by generic measures or those specifically designed for newly diagnosed patients.

Electronic supplementary materialThe online version of this article doi:10.1186-1477-7525-4-92 contains supplementary material, which is available to authorized users.

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Author: Nancy E Avis - Edward Ip - Kristie Long Foley

Source: https://link.springer.com/



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