Title

Improving CKD-Specific Patient-Reported Measures of Health-Related Quality of Life

UMMS Affiliation

Department of Quantitative Health Sciences

Publication Date

2019-04-30

Document Type

Article

Disciplines

Epidemiology | Female Urogenital Diseases and Pregnancy Complications | Health Services Administration | Health Services Research | Male Urogenital Diseases | Nephrology

Abstract

BACKGROUND: Patient-reported outcome measures that are more practical and clinically useful are needed for patients with CKD. We compared a new CKD-specific quality-of-life impact scale (CKD-QOL) with currently used measures.

METHODS: Patients (n=485) in different treatment groups (nondialysis stages 3-5, on dialysis, or post-transplant) completed the kidney-specific CKD-QOL and Kidney Disease Quality of Life-36 (KDQOL-36) forms and the generic SF-12 Health Survey at baseline and 3 months. New items summarizing quality of life (QOL) impact attributed to CKD across six QOL domains yielded single impact scores from a six-item static (fixed-length) form and from computerized adaptive tests (CATs) with three to six items. Validity tests compared the CKD-QOL, KDQOL-36 (Burden, Effects, and Symptoms/Problems subscales), and generic SF-12 measures across groups in four tests of clinical status and clinician assessment of change (CKD-specific tests), and number of comorbidities. ANOVA was used to test for group mean differences, variances in each measure explained by groups, and relative validity (RV) in comparison with the referent KDQOL-36 Burden subscale.

RESULTS: KDQOL-36 and CKD-QOL measures generally discriminated better than generic SF-12v2 measures. The pattern of variances across CKD-specific tests comparing validity favored CKD-QOL two-fold over KDQOL-36. Two RV test results confirmed CKD-QOL improvements over the referent KDQOL scale. Results for static and CAT CKD-QOL forms were similar. SF-12 Physical and KDQOL-36 Symptoms scores worsened with increasing comorbid condition counts.

CONCLUSIONS: Overall, compared with the KDQOL-36, the new approach to summarizing CKD-specific QOL impact performed better across multiple tests of validity. CAT surveys were more efficient than static surveys.

Keywords

KDQOL, Patient-Reported Outcomes, SF-12 Health Survey, chronic kidney disease, quality of life

DOI of Published Version

10.1681/ASN.2018080814

Source

J Am Soc Nephrol. 2019 Apr;30(4):664-677. doi: 10.1681/ASN.2018080814. Epub 2019 Mar 21. Link to article on publisher's site

Journal/Book/Conference Title

Journal of the American Society of Nephrology : JASN

PubMed ID

30898870

Related Resources

Link to Article in PubMed

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