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RESEARCH PRODUCT
Bladder cancer index: cross-cultural adaptation into Spanish and psychometric evaluation.
Stefanie SchmidtRicard RielAlbert FrancesJosé Antonio Lorente GarínXavier Bonfill CospMaría José Martinez ZapataMaría Morales Suárez-varelaJavier De La CruzJosé Ignacio EmparanzaMaría José Sánchez-pérezJavier ZamoraJuan Manuel Ramos GoñiJordi AlonsoMontserrat FerrerVirginia BecerraYolanda Pardo CladellasOlatz GarinCarola Orrego VillagranRosa SuñolDimelza OsorioEsther CanovasGemma Sancho PardoIgnasi BolívarJordi BachsPablo MarotoMaría Jesús QuintanaCristina Martín LorenteFerran AlgabaJoan Palou RedortaSalvador Esquena FernándezFundació PuigvertRobin W.m. VernooijArnaia MartínezJ. I. Pijoan ZubizarretaLorea MartínezD. M. Castro DiazJ. L. BastidaArmando Suárez PachecoC. G. LópezJ. M Cozar OlmoCarmen MartínezDaisy Chang ChanM. J. Sanchez PerezA. I. Díaz MoratinosA. M. LuisA. HervásC. V. OcañaC. VaronaJavier BurgosJ. A. Polo RubioL. López-fando LavalleM. A. Jimenez CidreA. M. GarciaN. P. FarrasR. M. LopezS. S. GarciaVíctor AbrairaV. G. Dos SantosA. G. De La CámaraJavier De La CruzJ. P. MartinezH. G. MuñozM. A. Cabeza RodríguezI. R. DíazJ. P. Sanz JakaM. J. VelásquezA. L. GonzálezM. MoralesCarlos CampsC. C. DíazE. M. VidalF. S. BallesterJ. U. Juan EscuderoJ. P. PeidroJ. L. TorrecillaM. M. Ramos CamposM. M. Cebolladasubject
MalePsychometricsAparell urinariSurveys and QuestionnairesProspective cohort studyCàncermedia_commonLanguageCognitionGeneral MedicinePatient outcomeControl de qualitatNeoplasias de la Vejiga UrinariaEstudios de ValidaciónPsicometríaBufeta -- CàncerFemalePsicometriaClinical psychologyCross-Cultural ComparisonQuality of lifemedicine.medical_specialtyPsychometricsUrinary bladder neoplasms:Psychiatry and Psychology::Behavioral Disciplines and Activities::Psychological Tests::Psychometrics [Medical Subject Headings]:Publication Characteristics::Study Characteristics::Validation Studies [Medical Subject Headings]Cronbach's alpha:Disciplines and Occupations::Social Sciences::Quality of Life [Medical Subject Headings]medicine:Diseases::Neoplasms::Neoplasms by Site::Urogenital Neoplasms::Urologic Neoplasms::Urinary Bladder Neoplasms [Medical Subject Headings]media_common.cataloged_instanceHumansEuropean UnionEuropean unionAgedNeoplasm StagingGynecologyAnalysis of VarianceBladder cancerbusiness.industryResearchPublic Health Environmental and Occupational HealthConstruct validityTranslatingmedicine.diseaseCross-cultural studiesUnited StatesValidation studiesPatient outcomesCalidad de Vidabusinessdescription
Background: The Bladder Cancer Index (BCI) is so far the only instrument applicable across all bladder cancer patients, independent of tumor infiltration or treatment applied. We developed a Spanish version of the BCI, and assessed its acceptability and metric properties. Methods: For the adaptation into Spanish we used the forward and back-translation method, expert panels, and cognitive debriefing patient interviews. For the assessment of metric properties we used data from 197 bladder cancer patients from a multi-center prospective study. The Spanish BCI and the SF-36 Health Survey were self-administered before and 12 months after treatment. Reliability was estimated by Cronbach’s alpha. Construct validity was assessed through the multi-trait multi-method matrix. The magnitude of change was quantified by effect sizes to assess responsiveness./nResults: Reliability coefficients ranged 0.75-0.97. The validity analysis confirmed moderate associations between the BCI function and bother subscales for urinary (r = 0.61) and bowel (r = 0.53) domains; conceptual independence among all BCI domains (r ≤ 0.3); and low correlation coefficients with the SF-36 scores, ranging 0.14-0.48. Among patients reporting global improvement at follow-up, pre-post treatment changes were statistically significant for the urinary domain and urinary bother subscale, with effect sizes of 0.38 and 0.53. Conclusions: The Spanish BCI is well accepted, reliable, valid, responsive, and similar in performance compared to the original instrument. These findings support its use, both in Spanish and international studies, as a valuable and comprehensive tool for assessing quality of life across a wide range of bladder cancer patients. This work was supported by grants from Instituto de Salud Carlos III FEDER(PS09/02139; PS09/01204; PS09/01619; PS09/02555; PI12/00772) and from AGAUR (2012FI_B1 00177; 2009 SGR 1095).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-02-15 | Health and quality of life outcomes |