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Taşkaya C, Büyükturan B, Büyükturan Ö, Alkan H, Bingölbali Ö, Heybeli C. Comparison of the efficacy of intradialytic core stabilization and aerobic exercises for hemodialysis patients: randomized controlled single-blind study. Disabil Rehabil 2024:1-10. [PMID: 38874310 DOI: 10.1080/09638288.2024.2366438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 06/06/2024] [Indexed: 06/15/2024]
Abstract
PURPOSE This study was performed to investigate and compare the effects of intradialytic core stabilization and aerobic exercises on physical performance, fatigue, quality of life and dialysis adequacy. MATERIALS AND METHODS The study involved 39 individuals on hemodialysis randomized into two groups: aerobic exercise (AE, n = 20) and core stabilization (CSE, n = 19). Over 8 weeks, the AE group performed pedal ergometer exercises, while the CSE group performed 4-phase core stabilization exercises. Physical performance (five times sit to stand test, 2-min step test), quality of life (Kidney Disease Quality of Life-36; KDQOL-36), fatigue levels (Piper Fatigue Scale), and dialysis adequacy (Kt/V and URR) were assessed. RESULTS After training, a significant improvement was observed in the physical performance, fatigue levels, and some parameters of KDQOL-36 of the patients (p < 0.05). However, no significant changes were observed in dialysis adequacy indicators (Kt/V and URR) (p > 0.05). When the amount of development obtained in both treatment groups is compared, kidney disease burden only in the subparameter of KDQOL-36 was statistically significantly improved in the CSE group compared to the AE group (p < 0.05). CONCLUSIONS According to the results of the study, intradialytic core stabilization exercises appear to have similar effects to aerobic exercises and can be performed by HD patients.
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Affiliation(s)
- Cengiz Taşkaya
- Department of Health Care Services, Vocational School of Health Services, Muş Alparslan University, Muş, Turkey
| | - Buket Büyükturan
- School of Physical Therapy and Rehabilitation, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - Öznur Büyükturan
- School of Physical Therapy and Rehabilitation, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - Halil Alkan
- Faculty of Health Sciences, Muş Alparslan University, Muş, Turkey
| | - Ömer Bingölbali
- Department of Health Care Services, Vocational School of Health Services, Muş Alparslan University, Muş, Turkey
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Akca N, Saygili M, Ture AK. The relationship between the perception of chronic disease care and health-related quality of life in adults with chronic kidney disease. Chronic Illn 2022; 18:874-888. [PMID: 34569319 DOI: 10.1177/17423953211039792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES In this study, it was aimed to determine the chronic disease care assessments and health-related quality of life (HRQoL) levels in adults with chronic kidney disease (CKD) undergoing hemodialysis and to reveal the relationship between chronic disease care assessment and HRQoL. METHODS A single-center cross-sectional design has been used. Data were collected from 105 adults with CKD, who undergoing hemodialysis. Patient Evaluation Chronic Illness Care (PACIC) scale and Kidney Disease Quality of Life Short Form-36 (KDQOL-36) were used to obtain data. RESULTS The mean scale scores of PACIC were low (2.66 ± 0.891). Although participants achieved high HRQoL scores on the symptoms subdimension of the KDQoL-36 scale, they got low scores on the subdimensions of mental health, physical health, and burden of disease. Participants' HRQoL is affected significantly by gender, age, educational level, working status, income, and presence of comorbidity (especially diabetes), diagnosis time of CKD, and hemodialysis time at the hospital (p < 0.05). A positive and statistically significant relationship was found between PACIC and subdimensions of KDQoL-36 (p < 0.05). DISCUSSION The results can be a guide for improving the quality of chronic disease care in healthcare institutions. To improve this, patients' evaluations on this issue should be taken into account.
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Affiliation(s)
- Nesrin Akca
- 52977Kirikkale University, Faculty of Health Sciences, Department of Health Management, Kirikkale, Turkey
| | - Meltem Saygili
- 52977Kirikkale University, Faculty of Health Sciences, Department of Health Management, Kirikkale, Turkey
| | - Aysun Kandemir Ture
- 52977Kirikkale University, Faculty of Health Sciences, Department of Health Management, Kirikkale, Turkey
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Döner A, Taşcı S. Effect of massage therapy with lavender oil on severity of restless legs syndrome and quality of life in hemodialysis patients. J Nurs Scholarsh 2021; 54:304-314. [PMID: 34779137 DOI: 10.1111/jnu.12738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 10/12/2021] [Accepted: 10/22/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE This study assessed the effects of massage therapy using 5% lavender oil on the severity of restless legs syndrome (RLS) and the quality of life (QoL) of patients on hemodialysis (HD). DESIGN AND METHODS This is a randomized placebo-controlled study with a pretest-posttest design. This study was conducted from January 30, 2019, to May 6, 2019, at HD centers in Turkey, and it includes 58 participants-31 study patients and 27 controls. Data were collected using patient identification form, RLS severity rating scale, Kidney Disease Quality of Life Scale (KDQOLTM -36) and patient follow-up charts. As per the massage therapy protocol, the patients in the study and control groups received massage therapy with lavender oil and baby oil, respectively. FINDINGS RLS severity significantly decreased in all follow-up weeks in the study group and in the first, second, and third follow-up weeks in the control group. There were significant differences between the groups in terms of KDQOLTM -36 subscales and total scores at the initial and final follow-ups. CONCLUSION In HD patients, massage with lavender oil lessened the severity of RLS and improved the QoL. Accordingly, this therapy can be recommended to HD patients. CLINICAL RELEVANCE Massage therapy during HD sessions is easy, inexpensive, and patient-friendly with no side effects. It is known to reduce symptoms and enable the patients to easily perform daily activities of living. Massage therapy with lavender oil is effective and can be easily applied to patients with RLS by nurses. TRIAL REGISTRATION This study was registered under the Clinical Trials protocol registration system (NCT04630470) upon completion.
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Affiliation(s)
- Ayser Döner
- Department of Internal Nursing, Erciyes University Faculty of Health Science, Kayseri, Turkey
| | - Sultan Taşcı
- Department of Internal Nursing, Erciyes University Faculty of Health Science, Kayseri, Turkey
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Muz G, Erdoğan Yüce G, Yıldırım C, Dağdelen M. The effect of sleep hygiene training applied to hemodialysis patients on sleep quality and quality of life: randomized controlled trial. Sleep Biol Rhythms 2021. [DOI: 10.1007/s41105-020-00293-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bayin Donar G, Top M. A conceptual framework of quality of life in chronic kidney disease in Turkey: A patient-focused approach. Int J Health Plann Manage 2020; 35:1335-1350. [PMID: 32744746 DOI: 10.1002/hpm.3038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 06/25/2020] [Accepted: 07/10/2020] [Indexed: 01/17/2023] Open
Abstract
This study aimed to determine the quality of life of patients with chronic kidney disease who were receiving dialysis treatment. It also aimed to identify the factors affecting the quality of life of these patients. The independent variables analyzed were: patients' sociodemographic characteristics, organizational characteristics, adherence to treatment, patient-physician relationship, and patient activation level. The sample consisted of 328 patients with chronic kidney disease who received services from dialysis units of two university hospitals and two private dialysis centers. Data analysis was performed through multivariate regression. Results showed that receiving treatment from a hospital-based dialysis unit may have a positive effect in patients' quality of life; and patient-physician relationship, patient activity, and adherence to treatment may positively affect quality of life. Thus, planning of health service delivery that focus on improving the quality of life of patients who are more active by allowing them to establish positive relationships with their physicians and to have a better adherence to treatment should be adopted. These findings may provide health managers, health professionals, and individual patients with evidence-based information about treatment management and health service planning processes related to chronic kidney disease.
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Affiliation(s)
- Gamze Bayin Donar
- Department of Health Care Management, Hacettepe University, Faculty of Economics and Administrative Sciences, Ankara, Turkey
| | - Mehmet Top
- Department of Health Care Management, Hacettepe University, Faculty of Economics and Administrative Sciences, Ankara, Turkey
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Çevik B, Taşcı S. The effect of acupressure on upper extremity pain and quality of life in patients hemodialysis treatment: A Randomized Controlled Trial. Complement Ther Clin Pract 2020; 39:101128. [PMID: 32379666 DOI: 10.1016/j.ctcp.2020.101128] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/19/2020] [Accepted: 02/28/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND AND AIMS Acupressure is a commonly used method to reduce the severity of pain. This study was conducted to determine the effect of acupressure on pain severity and quality of life in patients with upper extremity pain due to hemodialysis. METHOD The study was completed with a total of 50 patients, consisting of 25 intervention group and 25 control group patients. In the intervention group, acupressure was applied to five acupressure points on the arms and shoulders in the first half of the dialysis sessions carried out for six weeks and for three days per week. RESULTS There was a significant decrease (p < .05) between the VAS pain score median values of the preliminary monitoring of patients in the intervention group and their VAS pain score median values recorded six weeks later. CONCLUSIONS Acupressure reduces extremity pain and increases the quality of life in dialysis patients.
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Affiliation(s)
- Banu Çevik
- Başkent Unıversity Faculty of Health Sciences, Department of Nursing, Ankara, Turkey.
| | - Sultan Taşcı
- Erciyes University Faculty of Health Sciences Department of Nursing, Kayseri, Turkey.
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TÜRK İ, ATEŞ K, BIYIKLI Z. Hemodiyaliz ve periton diyalizi hastalarında yaşam kalitesi ve ilişkili olduğu faktörler. CUKUROVA MEDICAL JOURNAL 2020. [DOI: 10.17826/cumj.628274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Zelko A, Skoumalova I, Kolarcik P, Rosenberger J, Rabajdova M, Marekova M, Geckova AM, van Dijk JP, Reijneveld SA. The effects of intradialytic resistance training on muscle strength, psychological well-being, clinical outcomes and circulatory micro-ribonucleic acid profiles in haemodialysis patients: Protocol for a quasi-experimental study. Medicine (Baltimore) 2019; 98:e15570. [PMID: 31083229 PMCID: PMC6531031 DOI: 10.1097/md.0000000000015570] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Intradialytic resistance training (IRT) protects patients' muscle mass and functions against protein-energy wasting, malnutrition and cachexia. However, the evidence of the effects of such an intervention in haemodialysis patients is limited and not conclusive. To improve the applicability of such interventions, we need a better understanding of molecular, functional and psycho-social adaptation in dialysed patients following a physical training. Therefore, the aim of this study is to investigate the effects of IRT on lower extremity muscle functions, quality of life, and anxiety and depression, clinical outcomes and circulatory micro-ribonucleic acid (miRNA) profiles in patients on chronic haemodialysis therapy. METHODS We will perform a quasi-experimental study in 3 dialysis centres. Patients will be recruited via their nephrologists and will be allocated to an experimental and a control group based on the location of the patients' dialysis centre. Patients allocated to the experimental group will undergo a 12-week IRT, while the control group will remain physically inactive during dialysis. The primary outcome is the change in the maximal force produced during an isometric contraction of lower extremity muscles. Secondary outcomes regard quality of life, anxiety and depression, clinical outcomes and circulatory miRNA profiles. Patients' level of health literacy defined as the ability to get and understand health information will be also measured in the study as a potential modifier of effects. DISCUSSION This quasi-experimental study can add in an important way to our understanding of the effects of resistance training on dialysis patients' muscle strength, quality of life and disease-specific outcomes.
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Affiliation(s)
- Aurel Zelko
- Institute of Physical Education and Sport, Pavol Jozef Safarik University, Kosice, Slovakia
- Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
| | - Ivana Skoumalova
- Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Department of Health Psychology, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Department of Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein, Groningen, Netherlands
| | - Peter Kolarcik
- Department of Health Psychology, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Olomouc University Society and Health Institute, Palacky University Olomouc, Olomouc, Czech Republic
| | - Jaroslav Rosenberger
- Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Department of Health Psychology, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Olomouc University Society and Health Institute, Palacky University Olomouc, Olomouc, Czech Republic
- 2nd Department of Internal Medicine, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Fresenius Medical Care - Dialysis Services Kosice, Kosice, Slovakia
| | - Miroslava Rabajdova
- Department of Medical and Clinical Biochemistry, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
| | - Maria Marekova
- Department of Medical and Clinical Biochemistry, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
| | - Andrea Madarasova Geckova
- Department of Health Psychology, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Olomouc University Society and Health Institute, Palacky University Olomouc, Olomouc, Czech Republic
| | - Jitse P. van Dijk
- Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
- Department of Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein, Groningen, Netherlands
- Olomouc University Society and Health Institute, Palacky University Olomouc, Olomouc, Czech Republic
| | - Sijmen A. Reijneveld
- Department of Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, Hanzeplein, Groningen, Netherlands
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Aiyegbusi OL, Kyte D, Cockwell P, Marshall T, Gheorghe A, Keeley T, Slade A, Calvert M. Measurement properties of patient-reported outcome measures (PROMs) used in adult patients with chronic kidney disease: A systematic review. PLoS One 2017. [PMID: 28636678 PMCID: PMC5479575 DOI: 10.1371/journal.pone.0179733] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Patient-reported outcome measures (PROMs) can provide valuable information which may assist with the care of patients with chronic kidney disease (CKD). However, given the large number of measures available, it is unclear which PROMs are suitable for use in research or clinical practice. To address this we comprehensively evaluated studies that assessed the measurement properties of PROMs in adults with CKD. Methods Four databases were searched; reference list and citation searching of included studies was also conducted. The COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) checklist was used to appraise the methodological quality of the included studies and to inform a best evidence synthesis for each PROM. Results The search strategy retrieved 3,702 titles/abstracts. After 288 duplicates were removed, 3,414 abstracts were screened and 71 full-text articles were retrieved for further review. Of these, 24 full-text articles were excluded as they did not meet the eligibility criteria. Following reference list and citation searching, 19 articles were retrieved bringing the total number of papers included in the final analysis to 66. There was strong evidence supporting internal consistency and moderate evidence supporting construct validity for the Kidney Disease Quality of Life-36 (KDQOL-36) in pre-dialysis patients. In the dialysis population, the KDQOL-Short Form (KDQOL-SF) had strong evidence for internal consistency and structural validity and moderate evidence for test-retest reliability and construct validity while the KDQOL-36 had moderate evidence of internal consistency, test-retest reliability and construct validity. The End Stage Renal Disease-Symptom Checklist Transplantation Module (ESRD-SCLTM) demonstrated strong evidence for internal consistency and moderate evidence for test-retest reliability, structural and construct validity in renal transplant recipients. Conclusions We suggest considering the KDQOL-36 for use in pre-dialysis patients; the KDQOL-SF or KDQOL-36 for dialysis patients and the ESRD-SCLTM for use in transplant recipients. However, further research is required to evaluate the measurement error, structural validity, responsiveness and patient acceptability of PROMs used in CKD.
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Affiliation(s)
- Olalekan Lee Aiyegbusi
- Centre for Patient Reported Outcomes Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
- Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
| | - Derek Kyte
- Centre for Patient Reported Outcomes Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
- Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
- * E-mail:
| | - Paul Cockwell
- Centre for Patient Reported Outcomes Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
- Department of Renal Medicine, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, United Kingdom
| | - Tom Marshall
- Centre for Patient Reported Outcomes Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
- Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
| | | | | | - Anita Slade
- Centre for Patient Reported Outcomes Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
- Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
| | - Melanie Calvert
- Centre for Patient Reported Outcomes Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
- Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham, United Kingdom
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Masina T, Chimera B, Kamponda M, Dreyer G. Health related quality of life in patients with end stage kidney disease treated with haemodialysis in Malawi: a cross sectional study. BMC Nephrol 2016; 17:61. [PMID: 27389582 PMCID: PMC4936205 DOI: 10.1186/s12882-016-0292-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 06/13/2016] [Indexed: 11/19/2022] Open
Abstract
Background Haemodialysis in Malawi consumes a disproportionate amount of the national health budget, costing approximately $20,000 per patient per year. Adjunctive therapeutic agents for end stage kidney disease and laboratory services to measure standard dialysis outcomes are not routinely available. Therefore, alternative outcome measures of the efficacy of haemodialysis in Malawi are required. We measured health related quality of life of adult patients in Malawi treated with haemodialysis for end stage kidney disease. Methods We performed a cross-sectional study of patients receiving haemodialysis for end stage kidney disease at 4 dialysis centres in Malawi between 24/10/2012 and 30/11/012. Patients were included if they were >18 years of age and had been receiving haemodialysis for >3 months. We used the Kidney Disease Quality of Life Instrument Short Form to assess health related quality of life. Results We recruited 22 of 24 eligible patients (mean age 44.8 ± 16.0 years, 59.1 % male, median duration on haemodialysis 12 months (Inter-quartile range 6–24 months)). Overall health related quality of life was low (mean score 59.9 ± 8.8, maximum possible score 100) with the lowest scores recorded for physical health component summary score (50.4 ± 22.8) compared to mental health component summary (61.3 ± 23.0) and kidney disease component summary (67.9 ± 13.2). Low household income (<$4000 per year) was associated with lower mental health component scores (adjusted r2 = 0.413, p = 0.033). Conclusions Quality of life of haemodialysis patients in Malawi can be easily measured using a validated questionnaire and provides an alternative and important measure of the efficacy of haemodialysis therapy. Physical health scores were particularly low and this may affect income generating capacity. Increased efforts are required to improve the quality of life of haemodialysis patients in Malawi with a particular focus on the burden of physical symptoms. Electronic supplementary material The online version of this article (doi:10.1186/s12882-016-0292-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Thokozani Masina
- Malawi College of Medicine, Mahatma Gandhi Road, Ginnery Corner, Blantyre, Malawi. .,Department of Medicine, Queen Elizabeth Central Hospital, Mahatma Gandhi Road, Chihciri, Blantyre, Malawi.
| | - Bernadette Chimera
- Malawi College of Medicine, Mahatma Gandhi Road, Ginnery Corner, Blantyre, Malawi
| | - Martin Kamponda
- Malawi College of Medicine, Mahatma Gandhi Road, Ginnery Corner, Blantyre, Malawi
| | - Gavin Dreyer
- Malawi College of Medicine, Mahatma Gandhi Road, Ginnery Corner, Blantyre, Malawi.,Department of Nephrology, Royal Free Hospital, London, UK
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Pakpour AH, Yekaninejad M, Molsted S, Harrison AP, Hashemi F, Saffari M. Translation, cultural adaptation assessment, and both validity and reliability testing of the Kidney Disease Quality of Life--Short Form version 1.3 for use with Iranian patients. Nephrology (Carlton) 2011; 16:106-12. [PMID: 21175986 DOI: 10.1111/j.1440-1797.2010.01389.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM The aims of the study were to translate the Kidney Disease Quality of Life--Short Form version 1.3 (KDQOL-SF ver. 1.3) questionnaire into Iranian (Farsi), and to then assess it in terms of validity and reliability on Iranian patients. METHODS The questionnaire was first translated into Farsi by two independent translators, and then subsequently translated back into English. After translation disparities had been reconciled, the final Iranian questionnaire was tested. An initial test-retest reliability evaluation was performed over a 10 day period on a sample of 20 patients recruited from a larger group (212 patients with end-stage renal disease on haemodialysis). Afterwards, reliability was estimated by internal consistency, and validity was assessed using known group comparisons and constructs for the patient group as a whole. Finally, the factor structure of the questionnaire was extracted by performing exploratory factor analysis. RESULTS All of the scales in the questionnaire showed good test-retest reliability (i.e. intraclass correlations between test and retest scores were >0.7). All of the scales met the minimal criteria (0.7) for internal consistency and Cronbach's-α ranged 0.71-0.93. Furthermore, results from a discriminate validity evaluation showed that the questionnaire could be used to discriminate between subgroups of the patients. Finally, a principal component analysis of the disease-specific scales indicated that this part of the questionnaire could be summarized into an 11 factor structure that jointly accounted for 79.81% of the variance. CONCLUSION The Iranian version of the KDQOL-SF questionnaire is both highly reliable and valid for use with Iranian patients on haemodialysis.
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Affiliation(s)
- Amir H Pakpour
- Department of Public Health, Qazvin University of Medical Sciences, Qazvin, Iran.
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Joshi VD, Mooppil N, Lim JF. Validation of the kidney disease quality of life-short form: a cross-sectional study of a dialysis-targeted health measure in Singapore. BMC Nephrol 2010; 11:36. [PMID: 21172008 PMCID: PMC3014913 DOI: 10.1186/1471-2369-11-36] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 12/20/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In Singapore, the prevalence of end-stage renal disease (ESRD) and the number of people on dialysis is increasing. The impact of ESRD on patient quality of life has been recognized as an important outcome measure. The Kidney Disease Quality Of Life-Short Form (KDQOL-SF™) has been validated and is widely used as a measure of quality of life in dialysis patients in many countries, but not in Singapore. We aimed to determine the reliability and validity of the KDQOL-SF™ for haemodialysis patients in Singapore. METHODS From December 2006 through January 2007, this cross-sectional study gathered data on patients ≥21 years old, who were undergoing haemodialysis at National Kidney Foundation in Singapore. We used exploratory factor analysis to determine construct validity of the eight KDQOL-SF™ sub-scales, Cronbach's alpha coefficient to determine internal consistency reliability, correlation of the overall health rating with kidney disease-targeted scales to confirm validity, and correlation of the eight sub-scales with age, income and education to determine convergent and divergent validity. RESULTS Of 1980 haemodialysis patients, 1180 (59%) completed the KDQOL-SF™. Full information was available for 980 participants, with a mean age of 56 years. The sample was representative of the total dialysis population in Singapore, except Indian ethnicity that was over-represented. The instrument designers' proposed eight sub-scales were confirmed, which together accounted for 68.4% of the variance. All sub-scales had a Cronbach's α above the recommended minimum value of 0.7 to indicate good reliability (range: 0.72 to 0.95), except for Social function (0.66). Correlation of items within subscales was higher than correlation of items outside subscales in 90% of the cases. The overall health rating positively correlated with kidney disease-targeted scales, confirming validity. General health subscales were found to have significant associations with age, income and education, confirming convergent and divergent validity. CONCLUSIONS The psychometric properties of the KDQOL-SF™ resulting from this first-time administration of the instrument support the validity and reliability of the KDQOL-SF™ as a measure of quality of life of haemodialysis patients in Singapore. It is, however, necessary to determine the test-retest reliability of the KDQOL-SF™ among the haemodialysis population of Singapore.
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Affiliation(s)
- Veena D Joshi
- SingHealth Centre for Health Services Research, Singapore Health Services Pte. Ltd., Singapore.
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