Author:
Xiao Zhengqin,Liu Yuxi,Fong Daniel Yee-Tak,Huang Xinping,Weng Min,Wan Chonghua
Abstract
Abstract
Background
A short instrument would enhance the viability of a study. Therefore, we aimed to shorten the specific module (SPD-10) of the Quality of Life Instrument for Chronic Diseases - Chronic Renal Failure (QLICD-CRF) for assessing the quality of life of patients with chronic renal failure.
Methods
The 10-item SPD-10 was self-administered to 164 patients with chronic renal failure. A shortened form was first obtained by a tandem use of the classical test theory (CTT), the generalizability theory (GT), and the item response theory (IRT). In addition, we also shortened the SPD-10 by the Optimal Test Assembly (OTA).
Results
Both the tandem use of GT, CTT and IRT, and the OTA derived the same 7-item shortened version (SPD-7). It included items CRF1, CRF2, CRF3, CRF4, CRF6, CRF8, and CRF9 of the SPD-10. The SPD-7 had a Cronbach alpha of 0.78. The correlation coefficients of its total and factor scores with those of the SPD-10 were 0.96 and 0.98, respectively. Confirmatory factor analysis confirmed the unidimensional structure of the SPD-7, with the comparative fit index=0.96, the Tucker-Lewis index=0.94, and the root mean square error of approximation=0.09.
Conclusion
The short-form SPD-7 is reliable and valid for assessing the impact of clinical symptoms and side effects on the quality of life of patients with chronic renal failure. It is an efficient option without compromising the measurement performance of the SPD-10.
Publisher
Springer Science and Business Media LLC
Subject
Health Informatics,Epidemiology
Reference41 articles.
1. Dai P, Chang W, Xin Z, Cheng H, Ouyang W, Luo A. Retrospective Study on the Influencing Factors and Prediction of Hospitalization Expenses for Chronic Renal Failure in China Based on Random Forest and LASSO Regression. Front Public Health. 2021;9:678276. https://doi.org/10.3389/fpubh.2021.678276.
2. Ku do Y, Park YS, Chang HJ, Kim SR, Ryu JW, Kim WJ. Depression and life quality in chronic renal failure patients with polyneuropathy on hemodialysis. Ann Rehabil Med. 2012;36(5):702-707. https://doi.org/10.5535/arm.2012.36.5.702.
3. Chang JS, Chang EJ, Jung CH. The Factors Affecting General Coping Styles in Chronic Renal Failure Patients. J Korean Neuropsychiatr Assoc. 2003;42(3):396–402.
4. Yang Z, Huang XP, Weng M, Xu CZ, Chen Y, Pan HY, et al. Validity evaluation of the quality of life instruments for chronic diseases-chronic renal failure scale (QLICD-CRF). J Guangdong Med Coll. 2014;32(03):401–4.
5. Yang Z, Huang XP, Wang CH, Weng M, Li XM, Bai YK, et al. Reliability Evaluation of the Quality of Life Instrument for Patients with Chronic Renal Failure (QLICD-CRF) based on Classical Test Theory and Generalizability Theory. China Health Stat. 2015;32(02):224–6.