title: Distress and social dysfunction following prostate cancer treatment: a longitudinal cross-cultural comparison of Japanese and American men.
abstract: We assessed the impact of bother with urinary and bowel dysfunction on social activities among men in Japan and the United States following primary therapy for localized prostate cancer. In paired longitudinal outcomes studies, we measured general and disease-specific health-related quality of life in 400 Japanese and 427 American men who underwent radical prostatectomy or brachytherapy for localized prostate cancer. Outcomes included the social function domain of the Medical Outcomes Study Short Form-36 and the University of California, Los Angeles Prostate Cancer Index, all of which are scored 0-100. Participants completed the questionnaires before and 1, 12 and 24 months after treatment. Among men who reported any urinary bother, Japanese men had slightly better urinary function than American men (84 vs 77, P<0.01). Before brachytherapy, urinary bother was weakly correlated with social function in both the countries; after brachytherapy, urinary bother was strongly correlated with social function in American but not Japanese men. After brachytherapy, bowel dysfunction had a stronger correlation with social function in American than Japanese men (P<0.05). The bother associated with urinary and bowel dysfunction after surgery or brachytherapy for prostate cancer has a greater impact on social function in American men than in Japanese men.
authors.affiliation: Department of Urology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1738, USA.
authors.forename: S
authors.initials: S
authors.lastname: Namiki
authors.forename: L
authors.initials: L
authors.lastname: Kwan
authors.forename: M
authors.initials: M
authors.lastname: Kagawa-Singer
authors.forename: A
authors.initials: A
authors.lastname: Terai
authors.forename: T
authors.initials: T
authors.lastname: Satoh
authors.forename: S
authors.initials: S
authors.lastname: Baba
authors.forename: Y
authors.initials: Y
authors.lastname: Arai
authors.forename: M S
authors.initials: MS
authors.lastname: Litwin
mesh_terms: D000368:Aged; D044466:Asian People; D001918:Brachytherapy / Q000009:adverse effects; D003431:Cross-Cultural Comparison; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011468:Prostatectomy / Q000009:adverse effects; D011471:Prostatic Neoplasms / Q000523:psychology* / Q000628:therapy*; D011788:Quality of Life; D011795:Surveys and Questionnaires; D014481:United States; D014570:Urologic Diseases / Q000209:etiology / Q000523:psychology