Validation of the QLQ-C30 Quality of Life Questionnaire for Different Types of Cancer

Authors

Keywords:

quality of life, psychometrics, validation study, reproducibility of results

Abstract

Introduction: Health-related quality of life or perceived health is the person's subjective assessment of his or her illness, treatment and well-being. The QLQ-C30 questionnaire is applied to cancer patients.

Objectives: To evaluate the metric properties of the QLQ-C30 questionnaire in Cuban cancer patients.

Methods: The sample consisted of 1785 patients to whom the QLQ-C30 questionnaire was applied. Of these, 1107 patients participated in five lung cancer clinical trials, 279 patients in three head and neck trials, 113 patients in two prostate cancer trials, 146 patients in two breast cancer trials and 140 patients in one cervical cancer trial. Cronbach's alpha of the items was used to assess reliability. Cronbach's alpha of the dimensions was used to assess internal consistency.

Results: There was good stability over time, since Cronbach's alpha was greater than 0.7 for all items. Internal consistency was good as Cronbach's alpha value was above 0.7 for all dimensions.

Conclusions: The QLQ-C30 questionnaire presented good metric properties in Cuban cancer patients.

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Author Biographies

Carmen Elena Viada González, Centro de Inmunología Molecular

Miembro de la Sociedad de Matemática y Computación.Lic. en Matemáticas, Universidad de la Habana, Julio 1991.Lic. en Cibernética, Universidad de la Habana, Julio 1995.MCs. en Estadística y Probabilidades, Universidad de la Habana, Abril 2000   Investigador Auxiliar. Noviembre 2002.

Carlos Narciso Bouza Herrera, Universidad de La Habana

Doctor en Ciencias Matemáticas, Profesor e Investigador Titular

Francisco Javier Ballesteros Rodríguez, Universidad del País Vasco UPV/EHU

Profesor Titular Universidad Facultad: Medicina y Enfermería Departamento: Neurociencia Doctor en Medicina, Universidad del País Vasco UPV/EHU Doctor en Ciencias Médicas, Universidad del País Vasco UPV/EHU

Martha María Fors López, Universidad de las Américas, Quito, Ecuador.

DOCTOR EN MEDICINA, INSTITUTO SUPERIOR DE CIENCIAS MÉDICAS DE LA HABANA ESPECIALISTA EN PRIMER GRADO EN BIOESTADISTICA, INSTITUTO SUPERIOR DE CIENCIAS MÉDICAS DE LA HABANA MASTER OF STATISTICS, HASSELT UNIVERSITY DOCTOR EN CIENCIAS MEDICAS, UNIVERSIDAD DE CIENCIAS MÉDICAS DE LA HABANA

Mabel Alvarez Cardona, Centro de Inmunología Molecular

Licenciada en Tecnología de la Salud, Gestión de la información en Salud. 2013 Master en Ciencias en Biotecnología Comtemporánea con Mención en Ensayos Clínicos 2019 Técnico Innovador de Primer Nivel. Abril 2012

Lázara García Fernández, Centro de Inmunología Molecular

Lic. Bioanálisis Clínico Julio 2014. Master en Ciencias en Biotecnología Comtemporánea con Mención en Ensayos Clínicos 2021

Aliuska Frias Blanco, Centro de Inmunología Molecular

Licenciada en Tecnología de la Salud, Gestión de la información en Salud. 2013 Master en Ciencias en Biotecnología Comtemporánea con Mención en Ensayos Clínicos 2022 Técnico Innovador de Primer Nivel. Abril 2012

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Published

2023-12-25

How to Cite

1.
Viada González CE, Bouza Herrera CN, Ballesteros Rodríguez FJ, Fors López MM, Alvarez Cardona M, García Fernández L, et al. Validation of the QLQ-C30 Quality of Life Questionnaire for Different Types of Cancer. INFODIR [Internet]. 2023 Dec. 25 [cited 2025 Sep. 20];(42). Available from: https://revinfodir.sld.cu/index.php/infodir/article/view/1375

Issue

No. 42 (2023): SEPTIEMBRE-DICIEMBRE

Section

Original Articles

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