Construction and validation of a short-form Quality-Of-Life Scale for Chinese Patients with Benign Prostatic Hyperplasia
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BioMed Central
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Construction and validation of a short-form Quality-Of-Life Scale for Chinese Patients with Benign Prostatic Hyperplasia Yanfang Guo1,2, Jingcheng Shi1, Ming Hu1 and Zhenqiu Sun*1 Address: 1Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, PR China and 2Huaihua Medical School, Huaihua, Hunan, PR China E-mail: Yanfang Guo - [email protected]; Jingcheng Shi - [email protected]; Ming Hu - [email protected]; Zhenqiu Sun* - [email protected] *Corresponding author
Published: 17 March 2009 Health and Quality of Life Outcomes 2009, 7:24
Received: 8 April 2008 doi: 10.1186/1477-7525-7-24 Accepted: 17 March 2009
This article is available from: http://www.hqlo.com/content/7/1/24 © 2009 Guo et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract Background: In 2003, a 74-item quality-of-life (QOL) scale for Chinese benign prostatic hyperplasia (BPH) patients (BPH-QLS) was developed. Although the scale displayed good reliability and validity, the time required to complete it may limit its use. The purpose of this study was to construct and validate a short-form quality-of-life (QOL) scale for Chinese patients with Benign Prostatic Hyperplasia (BPH). Methods: According to the previously published 74-item quality of life scale for BPH (BPH-QLS), we developed a pool of items, then condensed these items and validated the shortened scale, based on collected data from 163 patients with BPH. We used eight methods to reduce the items. Results: A 33-item QOL scale for BPH (short-form of BPH-QLS) was constructed. The time take by the new scale was much shorter than the original one. There was no significant difference between the 33-item scale and 74-item scale, in terms of reliability. Moreover, the 33-item BPHQLS showed a high correlation with the 74-item BPH-QLS (r = 0.971). Scores generated by the two scales were not only parallel and coincident but also at the same level. Conclusion: We concluded that the reliability and validity of the short form of BPH-QLS is close to those of the 74-item BPH-QLS. It should be a good choice in clinical practice for its greater compliance and clinical feasibility.
Background BPH is a common male disorder that, though rarely lifethreatening, greatly affects patients' perceived quality of life (QOL). QOL is an important component in the evaluation of BPH treatment strategies. Several BPH-specific QOL scales have been developed, e.g., the International Prostate Symptom Score (IPSS), the Danish Prostate Symptom Score (DAN-PSS-1), the International Continence Society 'male' questionnaire short-form (ICSmale-SF) and the BPH Quality of Life Index [1-4]. Although the IPSS and QOL index are universally used, they can only quantify severity of
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