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León-Salas B, Bilbao-González A, de Pascual y Medina AM, Esteva M, Toledo-Chávarri A, Fuentes-Sánchez C, Bohn-Sarmiento U, Padrón-Peña P, González-Sánchez S, Valcárcel-López R, Trujillo-Martín MDM. Cross-cultural adaptation, reliability and validity of the Spanish version of the long-term quality of life questionnaire. Front Oncol 2024; 14:1375125. [PMID: 38567161 PMCID: PMC10985178 DOI: 10.3389/fonc.2024.1375125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose The aim of this study was to translate, culturally adapt, and evaluate the psychometric properties of the Spanish Long-Term Quality of Life (LTQL) questionnaire. Methods The LTQL was initially translated into Spanish and cross-culturally adapted based on established guidelines. The Spanish LTQL was administered to patients with breast cancer who had completed their initial treatment 5 years earlier, along with other self-report measures: Quality of Life in Adult Cancer Survivors (QLACS), Hospital Anxiety and Depression Scale (HADS) and EORT-QLQ-BR23. Reliability was evaluated using internal consistency and test-retest. Convergent and known-groups validity were examined. Structural validity as determined by confirmatory factor analysis (CFA) and Rasch analyses was used to assess the unidimensionality and item-functioning of the LTQL domains. Results Cronbach's alpha were above 0.7 in all domains. Test-retest coefficients were between 0.72 to 0.96 for LTQL domains. LTQL total score was correlated with others total scores of other measures: QLACS (r=-0.39), HADS depression (r=-0.57), HADS anxiety (-0.45) and EORTC-QLQ-BR23 (r=-0.50). CFA provided satisfactory fit indices, with RMSEA value of 0.077 and TLI and CFI values of 0.901 and 0.909, respectively. All factor loadings were higher than 0.40 and statistically significant (P<0.001). Rasch analysis showed that Somatic Concerns domain had 4 misfitting items, and Philosophical/Spiritual View of Life and social Support domains only 1 misfit item. However, unidimensionality was supported for the four domains. Conclusion The findings support the validity and reliability of the Spanish version of LTQL questionnaire to be used in long-term cancer female survivors.
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Affiliation(s)
- Beatriz León-Salas
- Canary Islands Health Research Institute Foundation (FIISC), Santa Cruz de Tenerife, Spain
- Research Network on Chronic Diseases, Primary Care, and Health Promotion (RICAPPS), Carlos III Health Institute (Instituto de Salud Carlos III), Madrid, Spain
| | - Amaia Bilbao-González
- Research Network on Chronic Diseases, Primary Care, and Health Promotion (RICAPPS), Carlos III Health Institute (Instituto de Salud Carlos III), Madrid, Spain
- Osakidetza Basque Health Service, Basurto University Hospital, Research and Innovation Unit, Bilbao, Spain
- Research Unit, Kronikgune Health Services Research Institute, Barakaldo, Spain
- Department of Medicine, Faculty of Health Sciences, University of Deusto, Bilbao, Spain
| | | | - Magdalena Esteva
- Majorca Primary Care Management. Research Unit, Palma de Mallorca, Spain
- Health Research Institute of Balearic Islands (IdIsBA), Palma de Mallorca, Spain
| | - Ana Toledo-Chávarri
- Canary Islands Health Research Institute Foundation (FIISC), Santa Cruz de Tenerife, Spain
- Research Network on Chronic Diseases, Primary Care, and Health Promotion (RICAPPS), Carlos III Health Institute (Instituto de Salud Carlos III), Madrid, Spain
| | - Claudio Fuentes-Sánchez
- Department of Medical Oncology, Nuestra Señora de Candelaria University Hospital, Santa Cruz de Tenerife, Spain
| | - Uriel Bohn-Sarmiento
- Department of Medical Oncology, Gran Canaria Dr. Negrin General University Hospital, Las Palmas de Gran Canaria, Spain
| | - Pilar Padrón-Peña
- Nursing Service, University Hospital of Canary Islands, Santa Cruz de Tenerife, Spain
| | | | - Rafael Valcárcel-López
- Canary Islands Primary Care, Canary Islands Health Service (SCS), Santa Cruz de Tenerife, Spain
| | - María del Mar Trujillo-Martín
- Canary Islands Health Research Institute Foundation (FIISC), Santa Cruz de Tenerife, Spain
- Research Network on Chronic Diseases, Primary Care, and Health Promotion (RICAPPS), Carlos III Health Institute (Instituto de Salud Carlos III), Madrid, Spain
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