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Pervaiz A, Ather MH, Bashir A, Aziz W. Urdu Translation and Linguistic Validation of the Bladder Cancer Index Questionnaire. Cureus 2022; 14:e27487. [PMID: 36060374 PMCID: PMC9423128 DOI: 10.7759/cureus.27487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2022] [Indexed: 11/15/2022] Open
Abstract
Background This study aimed to translate the Bladder Cancer Index (BCI) questionnaire to Urdu and validate it to assess the quality of life of patients with bladder cancer. Material and methods After forward and backward translation of the BCI questionnaire into Urdu, content validity was calculated using the content validity index (CVI) based on input from five health experts regarding the clarity and relevance of the questionnaire. Construct validity was measured by comparing the inter-scale domains and subdomains of BCI and by comparing BCI with Short Form 36 (SF-36) using correlations. For assessment of reliability, Cronbach’s alpha was calculated to measure internal consistency and for test-retest reliability, the questionnaire was re-administered four weeks later and the correlation of responses at baseline and at a four-week time point was evaluated. Results The questionnaire has good content validity for clarity (0.91) and relevance (0.87). The construct validity of BCI was also adequately displayed by moderate to high correlation between different subdomains of BCI (Pearson’s r: urinary - 0.62, bowel - 0.78, sexual function - 0.43) and low to moderate correlation between responses of BCI compared with SF-36 (Pearson’s r mostly >0.45). Test-retest reliability was excellent (Pearson’s r 0.90-0.98), and there was good internal consistency (Cronbach’s alpha 0.79-0.92) in the different domains of the questionnaire. Conclusion The Urdu-translated BCI is a valid and reliable tool to measure the impact of bladder cancer on the quality of life of patients.
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Osawa T, Wei JT, Abe T, Honda M, Rew KT, Dunn R, Yamada S, Furumido J, Kikuchi H, Matsumoto R, Sato Y, Harabayashi T, Takada N, Minami K, Morita K, Kashiwagi A, Fukuhara S, Murai S, Ito YM, Ogasawara K, Shinohara N. Comparison of Health-Related Quality of Life Between Japanese and American Patients with Bladder Cancer as Measured by a Newly Developed Japanese Version of the Bladder Cancer Index. Bladder Cancer 2021. [DOI: 10.3233/blc-200359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
INTRODUCTION: The aim of this study is to characterize health related quality of life (HRQOL) in Japanese patients after bladder cancer surgery and to perform cross-cultural comparison between Japanese and American patients. METHODS: Firstly, we cross-sectionally assessed HRQOL of 371 patients in Japan using the Bladder Cancer Index (BCI-Japanese). HRQOL of the four groups of patients (native bladder without intravesical therapy, native bladder with intravesical therapy, cystectomy with ileal conduit, and cystectomy with neobladder) were assessed. Secondly, we compared the Japanese with the American cohort (n = 315) from the original BCI paper. After adjusting for age and gender, the differences in each BCI subdomain score was analyzed. RESULTS: Among Japanese patients, the urinary domain function score was significantly lower among the cystectomy with neobladder group, compared to the cystectomy with ileal conduit group (p < 0. 01). Despite this, the urinary bother was comparable between the two groups. Although there were apparent differences between Japanese and American patients, there were few differences in Urinary and Bowel HRQOL. In three of the four treatment groups (other than native bladder with intravesical therapy), Japanese patients were more likely than Americans to report poor sexual function (p < 0.05). However, Japanese patients were less likely than Americans to be bothered by their lower sexual function, regardless of treatment (p < 0.05). CONCLUSIONS: HRQOL outcomes following treatment of bladder cancer in Japan are comparable to those in the USA, except for sexual functioning and sexual bother. The BCI can be used for cross-cultural assessments of HRQOL in bladder cancer patients.
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Affiliation(s)
- Takahiro Osawa
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - John T. Wei
- Department of Urology, University of Michigan Health System, Ann Arbor, MI, USA
| | - Takashige Abe
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Michitaka Honda
- Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, Japan
| | - Karl T. Rew
- Department of Urology, University of Michigan Health System, Ann Arbor, MI, USA
| | - Rod Dunn
- Department of Urology, University of Michigan Health System, Ann Arbor, MI, USA
| | - Shuhei Yamada
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Jun Furumido
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Hiroshi Kikuchi
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Ryuji Matsumoto
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yasuyuki Sato
- Department of Urology, Keiyukai Hospital, Sapporo, Japan
| | | | - Norikata Takada
- Department of Urology, Hokkaido Cancer Center, Sapporo, Japan
| | - Keita Minami
- Department of Urology, Sapporo City General Hospital, Sapporo, Japan
| | - Ken Morita
- Department of Urology, Kushiro City General Hospital, Kushiro, Japan
| | - Akira Kashiwagi
- Department of Urology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Shunichi Fukuhara
- Section of Clinical Epidemiology, Department of Community Medicine, Kyoto University, Kyoto, Japan
- Department of General Medicine, Shirakawa STAR, Fukushima Medical University, Fukushima, Japan
| | - Sachiyo Murai
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yoichi M. Ito
- Clinical Research and Medical Innovation Center, Hokkaido University Hospital, Sapporo, Japan
| | | | - Nobuo Shinohara
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Osawa T, Wei JT, Abe T, Honda M, Yamada S, Furumido J, Kikuchi H, Matsumoto R, Hirakawa K, Sato Y, Sasaki Y, Harabayashi T, Takada N, Minami K, Tanaka H, Morita K, Kashiwagi A, Miyajima N, Akino T, Murai S, Ito YM, Fukuhara S, Ogasawara K, Shinohara N. Health-related quality of life in Japanese patients with bladder cancer measured by a newly developed Japanese version of the Bladder Cancer Index. Int J Clin Oncol 2020; 25:2090-2098. [PMID: 32833102 PMCID: PMC7677272 DOI: 10.1007/s10147-020-01770-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/11/2020] [Indexed: 11/12/2022]
Abstract
Introduction We validated a Japanese version of the Bladder Cancer Index (BCI) as a tool for measuring health-related quality of life (HRQOL) in bladder cancer patients treated with various surgical procedures. Methods The reliability and validity of the Japanese BCI were examined in 397 Japanese patients with bladder cancer via cross-sectional analysis. The patients simultaneously completed the Short Form (SF)-12, EQ-5D, and the Functional Assessment of Cancer Therapy-General and Bladder (FACT-G and FACT-BL). The differences in BCI subscales among various treatment groups were analyzed. Results This study involved 397 patients (301 males and 96 females), with a mean age of 70 years and a median disease duration of 29 months (IQR: 12–66 months). Of these patients, 221 underwent transurethral resection of a bladder tumor, and 176 patients underwent radical cystectomy (ileal conduit: 101 patients, ileal neobladder: 49, and ureterostomy: 26). Cronbach’s alpha coefficient was ≥ 0.78 for all subscales, except the bowel bother subscale. Despite moderate correlations being detected between the function and bother score in urinary and bowel domains, the sexual function score was inversely correlated with the sexual bother score (r = − 0.19). A missing value percentage of > 15% was associated with old age (p < 0.05). The mean domain scores differed significantly among distinct clinically relevant treatment groups. Conclusions Although revisions are needed to make it easier for elderly patients to comprehend, we confirmed the reliability and validity of the Japanese BCI. The Japanese BCI could be used for cross-cultural assessments of HRQOL in bladder cancer patients. Electronic supplementary material The online version of this article (10.1007/s10147-020-01770-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Takahiro Osawa
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - John T Wei
- Department of Urology, University of Michigan Health System, Ann Arbor, MI, USA
| | - Takashige Abe
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Michitaka Honda
- Department Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, Japan
| | - Shuhei Yamada
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Jun Furumido
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Hiroshi Kikuchi
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Ryuji Matsumoto
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | | | - Yasuyuki Sato
- Department of Urology, Keiyukai Hospital, Sapporo, Japan
| | | | | | - Norikata Takada
- Department of Urology, Hokkaido Cancer Center, Sapporo, Japan
| | - Keita Minami
- Department of Urology, Sapporo City General Hospital, Sapporo, Japan
| | - Hiroshi Tanaka
- Department of Urology, Sapporo City General Hospital, Sapporo, Japan
| | - Ken Morita
- Department of Urology, Kushiro City General Hospital, Kushiro, Japan
| | - Akira Kashiwagi
- Department of Urology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Naoto Miyajima
- Department of Urology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Tomoshige Akino
- Department of Urology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Sachiyo Murai
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yoichi M Ito
- Clinical Research and Medical Innovation Center, Hokkaido University Hospital, Sapporo, Japan
| | - Shunichi Fukuhara
- Section of Clinical Epidemiology, Department of Community Medicine, Kyoto University, Kyoto, Japan.,Department of General Medicine, Shirakawa STAR, Fukushima Medical University, Fukushima, Japan
| | | | - Nobuo Shinohara
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Osawa T, Wei JT, Abe T, Kako Y, Murai S, Shinohara N. Development of the Japanese version of the health-related quality of life questionnaire for bladder cancer patients using the Bladder Cancer Index: A pilot study. Int J Urol 2019; 26:1016-1017. [PMID: 31311062 DOI: 10.1111/iju.14073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Takahiro Osawa
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - John T Wei
- Department of Urology, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Takashige Abe
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Yuki Kako
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Sachiyo Murai
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Nobuo Shinohara
- Department of Urology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
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