TY - JOUR
T1 - Bladder cancer index
T2 - cross-cultural adaptation into Spanish and psychometric evaluation
AU - Schmidt, Stefanie
AU - Riel, Ricard
AU - Frances, Albert
AU - Lorente Garin, José A.
AU - Bonfill, Xavier
AU - Martinez-Zapata, María J.
AU - Morales Suarez-Varela, Maria
AU - dela Cruz, Javier
AU - Emparanza, José I.
AU - Sánchez, María José
AU - Zamora, Javier
AU - Goñi, Juan Manuel R
AU - Alonso, Jordi
AU - Ferrer, Montse
AU - Becerra, Virginia
AU - Pardo, Yolanda
AU - Fores, Montserrat Ferrer
AU - Garin, Olatz
AU - Villagran, Carola Orrego
AU - Suñol, Rosa
AU - Osorio, Dimelza
AU - Cosp, Xavier Bonfill
AU - Canovas, Esther
AU - Pardo, Gemma Sancho
AU - Bolívar, Ignasi
AU - Bachs, Jordi
AU - Maroto, José Pablo
AU - Quintana, M. Jesús
AU - Martínez Zapata, M. José
AU - Lorente, Cristina Martin
AU - Algaba, Ferran
AU - Redorta, Palou
AU - Esquena, Salvador
AU - Puigvert, Fundació
AU - Vernooij, Robin
AU - Martínez, Amaia
AU - Pijoan Zubizarreta, José Ignacio
AU - Martínez, Lorea
AU - Castro Diaz, David Manuel
AU - Bastida, Julio López
AU - Pacheco, Armando Suárez
AU - López, Cesar García
AU - Cozar Olmo, Jose Manuel
AU - Martínez, Carmen
AU - Chan, Daysy Chang
AU - Sanchez Perez, M. Jose
AU - Díaz Moratinos, Ana Isabel
AU - Luis, Angel Montero
AU - Hervás, Asunción
AU - Ocaña, Carmen Vallejo
AU - Varona, Costantino
AU - Burgos, Javier
AU - Polo Rubio, Jose Alfredo
AU - López-Fando Lavalle, Luis
AU - Jimenez Cidre, Miguel Angel
AU - Garcia, Alfonso Muriel
AU - Farras, Nieves Plana
AU - Lopez, Rosa Morera
AU - Garcia, Sonsoles Sancho
AU - Abraira, Victor
AU - Dos Santos, Victoria Gomez
AU - De la Cámara, Agustín Gómez
AU - De la Cruz, Javier
AU - Martinez, Juan Passas
AU - Muñoz, Humberto García
AU - Cabeza Rodríguez, M. Ángeles
AU - Díaz, Irune Ruiz
AU - Sanz Jaka, Juan Pablo
AU - Velásquez, M. José
AU - González, Agustin LLopis
AU - Morales, María
AU - Camps, Carlos
AU - Díaz, Cristina Caballero
AU - Vidal, Emilio Marqués
AU - Ballester, Francisco Sánchez
AU - Juan Escudero, Joaquin Ulises
AU - Peidro, Jorge Pastor
AU - Torrecilla, José López
AU - Ramos Campos, M. Macarena
AU - Cebollada, Miguel Martorell
PY - 2014/2/15
Y1 - 2014/2/15
N2 - 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. Results: 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.
AB - 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. Results: 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.
KW - Patient outcomes
KW - Psychometrics
KW - Quality of life
KW - Urinary bladder neoplasms
KW - Validation studies
UR - http://www.scopus.com/inward/record.url?scp=84894082830&partnerID=8YFLogxK
U2 - 10.1186/1477-7525-12-20
DO - 10.1186/1477-7525-12-20
M3 - Article
C2 - 24528506
AN - SCOPUS:84894082830
SN - 1477-7525
VL - 12
SP - 1
EP - 7
JO - Health and Quality of Life Outcomes
JF - Health and Quality of Life Outcomes
IS - 1
M1 - 20
ER -