Invariance of Quality of Life Questionnaire Eortc Qlqc30 In Different Cancer Indications

Abstract:

OBJECTIVES To validate the short version of the QLQ-C30 obtained for patients with non-small-cell lung cancer in patients with head and neck, prostate, breast or cervix cancer METHODS We analyzed data of 636 patients distributed: 237 diagnosed with head and neck cancer, 146 diagnosed with breast cancer, 140 diagnosed with cervix cancer and 113 diagnosed with prostate cancer. The analysis followed a 4-step approach. First, we conducted a Mokken nonparametric item response analysis to ascertain the QLQ-C30 dimensionality and separate several scale if appropriate. Second, we conducted a parametric Samejima’s graded response model (GRM) to assess the item characteristics and information for each scale. Third, we did a confirmatory factor analysis (CFA) to test the scales unidimensionality and to obtain standardized factor loadings to suggest a reduced version of the QLQ. Finally, we assessed the …

Año de publicación:

2015

Keywords:

Fuente:

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