TY - JOUR
T1 - Analysis Linking UCLA PCI With Expanded Prostate Cancer Index Composite
T2 - An Evaluation of Health Related Quality of Life in Japanese Men With Localized Prostate Cancer
AU - Namiki, Shunichi
AU - Takegami, Misa
AU - Kakehi, Yoshiyuki
AU - Suzukamo, Yoshimi
AU - Fukuhara, Shunichi
AU - Arai, Yoichi
N1 - Funding Information:
Supported by a grant from the Ministry of Health and Welfare of Japan.
PY - 2007/8
Y1 - 2007/8
N2 - Purpose: We evaluated the correspondence between UCLA PCI and the Extended Prostate Cancer Index Composite for Japanese patients with localized prostate cancer. Materials and Methods: A total of 385 patients treated with retropubic radical prostatectomy, external beam radiation, hormonal therapy or select watchful waiting from 2002 to 2006 were enrolled. For this study we used equipercentile linking, a technique that identifies scores on the 2 measures that have the same percentile rank. Results: Urinary and sexual functions showed a strong correlation (r = 0.85 and 0.93, respectively, p <0.0001). In contrast, the correlation for bowel function was relatively weak (r = 0.47, p <0.0001). The correlations of each Extended Prostate Cancer Index Composite bother domain with UCLA PCI were 0.6 (p <0.0001). The linking between each scale of the Extended Prostate Cancer Index Composite and UCLA PCI domains showed that an Extended Prostate Cancer Index Composite urinary function score of 73 was equivalent to a UCLA PCI score of 60. With regard to urinary bother an Extended Prostate Cancer Index Composite score of 69 to 84 was equivalent to a UCLA PCI score of 75. A sexual function score of 18 on UCLA PCI corresponded to an Extended Prostate Cancer Index Composite score of 12 and a sexual bother score of 50 on UCLA PCI corresponded to an Extended Prostate Cancer Index Composite score of 56 to 88. Conclusions: The urinary and sexual domains of UCLA PCI and the Extended Prostate Cancer Index Composite showed strong correlations. In contrast, the correlation for the bowel domain was relatively weak. The results of the linking analysis between UCLA PCI and the Extended Prostate Cancer Index Composite may have implications useful for their interpretation.
AB - Purpose: We evaluated the correspondence between UCLA PCI and the Extended Prostate Cancer Index Composite for Japanese patients with localized prostate cancer. Materials and Methods: A total of 385 patients treated with retropubic radical prostatectomy, external beam radiation, hormonal therapy or select watchful waiting from 2002 to 2006 were enrolled. For this study we used equipercentile linking, a technique that identifies scores on the 2 measures that have the same percentile rank. Results: Urinary and sexual functions showed a strong correlation (r = 0.85 and 0.93, respectively, p <0.0001). In contrast, the correlation for bowel function was relatively weak (r = 0.47, p <0.0001). The correlations of each Extended Prostate Cancer Index Composite bother domain with UCLA PCI were 0.6 (p <0.0001). The linking between each scale of the Extended Prostate Cancer Index Composite and UCLA PCI domains showed that an Extended Prostate Cancer Index Composite urinary function score of 73 was equivalent to a UCLA PCI score of 60. With regard to urinary bother an Extended Prostate Cancer Index Composite score of 69 to 84 was equivalent to a UCLA PCI score of 75. A sexual function score of 18 on UCLA PCI corresponded to an Extended Prostate Cancer Index Composite score of 12 and a sexual bother score of 50 on UCLA PCI corresponded to an Extended Prostate Cancer Index Composite score of 56 to 88. Conclusions: The urinary and sexual domains of UCLA PCI and the Extended Prostate Cancer Index Composite showed strong correlations. In contrast, the correlation for the bowel domain was relatively weak. The results of the linking analysis between UCLA PCI and the Extended Prostate Cancer Index Composite may have implications useful for their interpretation.
KW - prostate
KW - prostatic neoplasms
KW - quality of life
KW - questionnaires
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U2 - 10.1016/j.juro.2007.03.113
DO - 10.1016/j.juro.2007.03.113
M3 - Article
C2 - 17561164
AN - SCOPUS:34447105109
VL - 178
SP - 473
EP - 477
JO - Investigative Urology
JF - Investigative Urology
SN - 0022-5347
IS - 2
ER -