Displaying publications 1 - 20 of 25 in total

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  1. Daher AM, AlMashoor SA, Winn T
    Qual Life Res, 2015 Apr;24(4):951-8.
    PMID: 25352036 DOI: 10.1007/s11136-014-0830-5
    PURPOSE: To assess the relationship between glycaemic control and quality of life (QoL) among a sample of Malaysians with type 2 diabetes mellitus.

    METHODS: This study is a cross-sectional hospital-based study involving 256 patients from three major ethnic groups in Malaysia. Data about QoL were collected with the 18-item Audit of Diabetes Dependent QoL questionnaire. Other data about putative predictors of QoL including personal characteristics and disease-related factors were also collected. Hierarchical multiple linear regression was used to determine factors associated with QoL and to control for confounding variables.

    RESULTS: The mean age of participants was 56.79 years. Participants were mostly women, employed and married and had attained secondary education. More than a third of the patients had a disease duration of more than 10 years, and about two-thirds had HbA1c ≥ 6.5 %. Those with desired glycaemic control had poorer QoL than those with less than desired glycaemic control moderated by the use of insulin. Hierarchical multiple linear regression showed that desired glycaemic control (HbA1c), diabetes worry, use of insulin, more than 10 years' duration of diabetes, neuropathy and retinopathy were associated with poor QoL, whereas being satisfied with waiting time for consultation was associated with better QoL.

    CONCLUSIONS: The results of this study show that diabetes was associated with negative impact on quality of life. The use of insulin to achieve desired glycaemic control was particularly associated with negative impact on QoL.
  2. Yong ASJ, Cheong MWL, Hamzah E, Teoh SL
    Qual Life Res, 2023 Aug;32(8):2391-2402.
    PMID: 36964453 DOI: 10.1007/s11136-023-03401-5
    PURPOSE: Due to the high burden of cancer-related suffering, it is paramount to understand the gaps in cancer care that lead to suffering. Advanced cancer patients have unmet needs and challenges that differ from those with early-stage cancer due to the rapid disease progression. By exploring advanced cancer patients' lived experiences and needs from the physical, psychological, social, and spiritual aspects, this study aims to identify gaps in the Malaysian health system and propose contextualised measures to improve cancer care.

    METHODS: Semi-structured, in-depth interviews were conducted to explore advanced cancer patients' lived experiences and needs from the physical, psychological, social, and spiritual aspects. The interviews were then transcribed and coded. Themes were developed from the codes using iterative thematic approach.

    RESULTS: The lived experiences and needs of nineteen patients converged into four major themes: disruption to daily lives, psychosocial and spiritual support system, information needs, and financial needs. This study described predominantly how cancer impacted patients' lives and livelihood, how patients coped with their psychological conditions after diagnosis, the need for effective communication and trust in a multicultural society, and how finance affected access to and experience of cancer care.

    CONCLUSION: Advanced cancer patients had different needs beyond receiving medical treatments. A concerted effort is required from clinicians, allied health professionals, social workers, support groups, and family members to understand and fulfil these needs.

  3. Ng TP, Lim LC, Jin A, Shinfuku N
    Qual Life Res, 2005 Sep;14(7):1755-68.
    PMID: 16119186
    BACKGROUND: Health-related quality of life in adolescents and ethnic and cultural differences are not well characterized. We used the Quality of Life Questionnaire for Adolescents (QOLQA) to examine ethnic differences in reported QOL scores among Chinese, Malay and Indian ethnicities in Singapore.

    METHODS: The 70-item QOLQA measuring five QOL domains (physical, psychological, independence, social and environmental) was administered to a random sample of 1363 school-children aged 10-15 years, representative of the ethnic composition of Singapore adolescents (Chinese 72%, Malays 20% and Indians 8%).

    RESULTS: Indians reported the highest overall QOL (mean 3.71 +/- SD 0.54) compared to Chinese (3.59 +/- 0.43), p < 0.05, and Malays (3.58 +/- 0.44), p < 0.05. In particular, Indians had significantly higher psychological QOL scores (3.73 +/- 0.61) compared to Chinese (3.55 +/- 0.54), p < 0.01. On the other hand, Chinese scored highest on physical and independence domains (3.97 +/- 0.54), p < 0.01 compared to Malays (3.82 +/- 0.55). There were no statistically significant gender differences in QOL scores. QOL declined significantly from age 10 to 15 for overall score, psychological, physical (p < 0.01) and environmental (p < 0.05). Lower socio-economic status and the self-report of a significant health problem were significantly associated with lower overall QOL and most domains. These ethnic differences persisted after adjusting for differences in socio-economic and health status. Psychometric properties and known group construct validity appeared to be similar across different ethnic groups, but compared to Chinese (r = 0.39) or Malays (r = 0.39), Indians showed a higher correlation of psychological scores with physical score (r = 0.59) and with other domain scores.

    CONCLUSION: Significant ethnic differences in reported adolescent quality of life among Chinese, Malays and Indians in Singapore that are independent of socioeconomic and health status suggest important cultural differences.

  4. Ng HM, Khor BH, Sahathevan S, Sualeheen A, Chinna K, Gafor AHA, et al.
    Qual Life Res, 2021 Nov 08.
    PMID: 34748139 DOI: 10.1007/s11136-021-03018-6
    PURPOSE: To identify relationships between health-related quality of life (HRQOL) and nutritional status in hemodialysis (HD) patients.

    METHOD: Secondary data from a cross-sectional survey was utilized. HRQOL was assessed for 379 HD patients using the generic Short Form 36 (SF-36) and disease-specific Kidney-Disease Quality of Life-36 (KDQOL-36). Malnutrition was indicated by malnutrition inflammation score (MIS) ≥ 5, and presence of protein-energy wasting (PEW). The individual nutritional parameters included the domains of physical status, serum biomarkers, and dietary intake. Multivariate associations were assessed using the general linear model.

    RESULTS: MIS ≥ 5 was negatively associated with SF-36 scores of physical functioning (MIS 

  5. Lua PL, Neni WS
    Qual Life Res, 2013 Oct;22(8):2123-32.
    PMID: 23329469 DOI: 10.1007/s11136-013-0352-6
    BACKGROUND: Improving health-related quality of life (HRQoL) among people with epilepsy (PWE) has become the focus of various treatment programmes and behavioural interventions which continue to be challenging to both patients and healthcare professionals.

    AIMS AND OBJECTIVES: To investigate the impact of SMS-based epilepsy education programme on PWE's HRQoL status and to determine the predictors for good HRQoL.

    METHODS: Eligible epilepsy out-patients from three public hospitals in East Coast Peninsular Malaysia were randomized into two groups: intervention (IG) and control (CG). Patients in the CG were supplied with only printed epilepsy educational module, while those in the IG additionally received short message service (SMS) from the Mobile Epilepsy Educational System (MEES). The Malay Quality of Life in Epilepsy Inventory-30 (MQOLIE-30) was utilized for HRQoL assessment. Descriptive statistics, paired t test, analysis of covariance and multiple logistic regression were employed for data analyses (SPSS 16).

    RESULTS: One hundred and forty-four PWE were recruited for the study (age = 30.5 ± 11.8; unmarried = 60.4 %; education level ≤ SPM/Cambridge O' level = 76.4 %; illness duration > 5 years = 51.1 %). After controlling for possible confounders, IG exhibited positive changes in HRQoL profile compared to CG particularly in Seizure Worry, Overall Quality of Life, Emotional Well-Being, Social Functioning and Overall Score (p < 0.05). After adjusting for covariates, being employed and receiving additional SMS-based epilepsy education programme emerged as the significant predictors of good HRQoL among PWE.

    CONCLUSION: Receiving continuous SMS-based epilepsy information from the MEES seemed to generate positive impacts on PWE's overall HRQoL. This study has provided a basis for future innovations to inspire efforts in ensuring the welfare and HRQoL of PWE and their families.

    Study site: Eligible epilepsy out-patients from three public hospitals in East Coast Peninsular Malaysia
  6. Pandey M, Thomas BC, Ramdas K, Eremenco S, Nair MK
    Qual Life Res, 2002 Mar;11(2):87-90.
    PMID: 12018741
    BACKGROUND: Recent advances in diagnosis and treatment of cancer have led to an increase in cancer survival, and hence, there is a greater emphasis on quality beside quantity of survival. Developing countries too have begun to recognize the need for monitoring quality of life (QOL). However, in most of the developing countries, a validated and reliable tool for the purpose is yet to be realized.

    MATERIAL AND METHOD: The functional assessment of chronic illness therapy (FACIT) system is a collection of QOL questionnaires targeted to measure QOL in chronic illness. The functional assessment of cancer therapy for breast cancer (FACT-B) was translated into the local language (Malayalam) and tested for validity and reliability.

    RESULTS: The tool thus developed showed substantial sensitivity, as does the source tool. The Cronbach's alpha for the total FACT-B was 0.87, which is similar to the alpha of 0.9 observed in the FACT-B English version. The mean FACT-B score was 94.3 compared to 112.8 for the source tool.

    CONCLUSION: The Malayalam translation of the FACT-B questionnaire was developed, tested and validated, and was found satisfactory in comparison to the source tool.

  7. Tan MHP, Ong SC, Vasan Thakumar A, Mustafa N
    Qual Life Res, 2023 Jul;32(7):1925-1941.
    PMID: 36781810 DOI: 10.1007/s11136-023-03360-x
    PURPOSE: There is a knowledge gap of health utility values for Type 2 Diabetes Mellitus (T2DM) complications in Malaysia. This study aimed to estimate EQ-5D-5L utility values and evaluate health-related quality of life (HRQoL) for Malaysian T2DM associated with complications and clinical characteristics.

    METHODS: A cross-sectional study was conducted on T2DM patients at a tertiary hospital outpatient using the Malay and English version of the EQ-5D-5L questionnaire. Health utility values were derived using the Malaysian EQ-5D-5L value set. Ordinary least squares (OLS) multivariable regression model was used to estimate the health utility decrements associated with T2DM-related complications and clinical characteristics.

    RESULTS: A total of 513 T2DM patients were recruited. Overall, pain was the most affected of all five EQ-5D-5L dimensions. Patients with foot ulcer, amputation, severe heart failure and frequent hypoglycemia reported more problems collectively in all EQ-5D-5L dimensions. Older age, lower education level, longer duration of T2DM, urine protein creatine index (UPCI) > 0.02 g/mmol, and injection therapy were significantly associated with lower EQ-5D-5L utility values (p 

  8. Mohd Din FH, Hoe VC, Chan CK, Muslan MA
    Qual Life Res, 2015 May;24(5):1275-80.
    PMID: 25373928 DOI: 10.1007/s11136-014-0850-1
    PURPOSE: The Pain Catastrophizing Scale (PCS) is designed to assess negative thoughts in response to pain. It is composed of three domains: helplessness, rumination, and magnification. We report on the translation, adaptation, and validation of scores on a Malay-speaking version of the PCS, the PCS-MY.

    METHOD: Guidelines for the process of cross-cultural adaptations of assessment measures were implemented. A sample of 303 young military recruits participated in the study. Factor structure, reliability, and validity of scores on the PCS-MY were examined. Convergent validity was investigated with the Positive and Negative Affect Scale, Short-form 12 version 2, and Ryff's Psychological Well-being Scale.

    RESULTS: Most participants were men, ranging in age from 19 to 26. The reliability of the PCS-MY scores was adequate (α = 0.90; mean inter-item correlation = 0.43). Confirmatory factor analysis showed that a modified version of the PCS-MY provided best fit estimates to the sample data. The PCS-MY total score was negatively correlated with mental well-being and positively correlated with negative affect (all ps < 0.001).

    CONCLUSION: The PCS-MY was demonstrated to have adequate reliability and validity estimates in the study sample.

  9. Akkawi ME, Nik Mohamed MH, Md Aris MA
    Qual Life Res, 2019 Jul;28(7):1913-1920.
    PMID: 30830646 DOI: 10.1007/s11136-019-02153-5
    PURPOSE: To investigate the association between potentially inappropriate medication (PIM)/potential prescribing omission (PPO) and the health-related quality of life (HRQoL) among community-dwelling hospitalized elderly patients.

    METHODS: This is a cross-sectional study that took place in a Malaysian tertiary hospital. Patients ≥ 65 years old with at least one medication on admission were recruited. The patients' prehospitalization medications were reviewed to identify PIMs/PPOs using version 2 of the STOPP/START criteria. HRQoL was assessed using the EuroQol-5 dimensions (EQ-5D) and EuroQol-visual analog scale (EQ-VAS). The association between the presence of PIM/PPO and the patients' HRQoL was analyzed using Chi-square and Mann-Whitney U tests. Multiple linear regression models were applied to determine the effect of exposure to PIM/PPO on the patients' HRQoL, adjusting for confounders.

    RESULTS: Out of 517 patients who fulfilled the inclusion criteria, 502 patients (97%) accepted to be involved in the study and completed the HRQoL questionnaire. The mean (SD) age was 72.4 (5.9) years. 393 (78.3%) of the patients had problems in at least one EQ-5D dimension with pain/discomfort problem being the most reported complaint. The mean (SD) values of the EQ-5D index and the EQ-VAS were 0.734 (0.214) and 59.6 (14.2), respectively, which are lower than those seen in the general Malaysian population. PIM and PPO were found in 28.5% and 45.6% of the patients, respectively. No significant differences were found in the EQ-5D dimensions, EQ-5D index and EQ-VAS between patients who had PIM/PPO and those who did not. Age, sex, and comorbidities were significantly associated with the patients' HRQoL.

    CONCLUSION: PIM and PPO are not uncommon among hospitalized elderly patients; however, it does not significantly affect their HRQoL as measured by the EQ-5D-3L instrument.

  10. Hasanah CI, Zaliha AR, Mahiran M
    Qual Life Res, 2011 Feb;20(1):91-100.
    PMID: 20737215 DOI: 10.1007/s11136-010-9729-y
    PURPOSE: The aim of this study was to determine the socio-demographic, clinical and psychological factors influencing the quality of life (QOL) in patients with human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS).
    METHODS: This was a cross-sectional study on 271 patients with HIV infection attending an HIV clinic in Kota Bharu, Malaysia. Participants completed the Malay version of the Functional Assessment of HIV Infection (FAHI) and Malay Hospital Anxiety Depression Scale (HADS).
    RESULTS: The patients functioned satisfactorily in the physical domain. They were mostly impaired in the social domain. Those who acquired the HIV infection via a heterosexual route seemed to have a significantly lower social well-being, while those who acquired HIV via drug injection were not associated with losses in the overall QOL or any of its domains. Non-disclosure paradoxically had a greater effect on social well-being. About 38% had possible anxiety, depression or both, and these emotional disturbances were significantly associated with total FAHI and its five domains.
    CONCLUSIONS: Psychological and social well-beings were more affected than physical well-being in out-patients with HIV infection in Kota Bharu, Malaysia. The study suggests that the patients with HIV infection should receive better psycho-education and psychological intervention.
    Study site: Infectious Disease clinic, Hospital Raja Perempuan Zainab II, Kota Bharu Kelantan, Malaysia
  11. Shafie AA, Vasan Thakumar A, Lim CJ, Luo N
    Qual Life Res, 2019 Jan;28(1):153-162.
    PMID: 30317426 DOI: 10.1007/s11136-018-2027-9
    PURPOSE: To determine the psychometric properties and performance of Malay and English versions of the EQ-5D-5L descriptive instrument in the general Malaysian population.

    METHODS: 1137 members of the Malaysian general public were sampled in this national study. Respondents were recruited by quota sampling of urbanicity, gender, age, and ethnicity. In face-to-face interviews, respondents first answered the EQ-5D-5L questionnaire administered using the EQ-Valuation Technology software, and then completed the EQ-5D-3L questionnaire on paper. A subgroup of the respondents were given paper form of EQ-5D-5L for completion within 2 weeks for test-retest reliability. Ceiling effects, response redistribution, informativity, and convergent validity were compared between EQ-5D-5L and ED-5D-3L separately by Malay and English language versions.

    RESULTS: The proportion of 'full health' responses (11111) drastically decreased by 25.55% and 15.74% in the Malay and English language versions indicating lower ceiling effects in EQ-5D-5L. Inconsistencies from response redistribution was below 6% for all dimensions across languages. The measure of relative informativity was comparatively higher in EQ-5D-5L than in EQ-5D-3L in both language versions, with the exception of dimensions mobility and pain/discomfort in the English version. Convergent validity in terms of correlation with EQ-VAS was relatively better for EQ-5D-5L dimensions, with pain/discomfort of the Malay version having the strongest correlation (|r| = 0.37). Also, reliability testing revealed moderate to poor agreements on all 5L dimensions.

    CONCLUSIONS: EQ-5D-5L fared better in terms of psychometric performance compared to EQ-5D-3L for both language versions. This encourages the application of the EQ-5D-5L in health-related research in Malaysia.

  12. Lua PL, Salek S, Finlay I, Lloyd-Richards C
    Qual Life Res, 2005 Sep;14(7):1669-81.
    PMID: 16119179 DOI: 10.1007/s11136-005-2817-8
    In terminally-ill patients, effective measurement of health-related quality of life (HRQoL) needs to be done while imposing minimal burden. In an attempt to ensure that routine HRQoL assessment is simple but capable of eliciting adequate information, the McGill Quality of Life Questionnaire-Cardiff Short Form (MQOL-CSF: 8 items) was developed from its original version, the McGill Quality of Life Questionnaire (MQOL: 17 items). Psychometric properties of the MQOL-CSF were then tested in palliative care patients consisting of 55 out-patients, 48 hospice patients and 86 in-patients: The MQOL-CSF had little respondent burden (mean completion time = 3.3 min) and was evaluated as 'very clear' or 'clear' (98.2%), comprehensive (74.5%) and acceptable (96.4%). The internal consistency reliability was moderate to high (Cronbach's alpha = 0.462-0.858) and test-retest reliability (Spearman's r(s)) ranged from 0.512-0.861. Correlation was moderate to strong (0.478-0.725) between items in the short form and their analogous domains in the MQOL. Most MQOL-CSF items showed strong associations with their own domain (r(s) > or = 0.40). Scores from MQOL-CSF significantly differentiated between patients with differing haemoglobin levels (p < 0.05). Construct validity was overall supported by principal component analysis. It is concluded that the MQOL-CSF is a feasible tool with favourable psychometric properties for routine HRQoL assessment in the palliative care population.
    Study site: out-patient palliative care clinic; a hospice centre and hospital inpatient wards, United Kingdom
  13. Shafie AA, Hassali MA, Liau SY
    Qual Life Res, 2011 May;20(4):593-600.
    PMID: 21046257 DOI: 10.1007/s11136-010-9774-6
    PURPOSE: The objective of this study was to assess the construct validity of the EQ-5D instrument among the Malaysian population.

    METHODS: This was a cross-sectional study conducted among Malaysian adults in three northern states of Malaysia. A pre-developed questionnaire consisting of both the EQ-5D and SF-12 items was used for data collection. Concurrent, convergent, and known group validity of EQ-5D were assessed against SF-12 and several known relationships with participants' demographic and illness characteristics.

    RESULTS: A total of 596 Malaysians participated in the study. The mean EQ-5D score was 0.93 (SD = 0.13), while the mean physical component score (PCS-12) and mental component score (MCS-12) scores were 48.9 (SD = 7.4) and 49.1 (SD = 8.0), respectively. Participants with a current medical problem had lower PCS-12 and MCS-12 scores and reported more problems with all of the EQ-5D dimensions; they also had lower EQ-5D and EQ-VAS scores (P < 0.05). Convergent validity was supported by a moderately positive correlation between EQ-5D and EQ-VAS with MCS-12 and PCS-12 scores; moreover, the stronger effect sizes between PCS-12 and the physical dimensions of EQ-5D as well as between MCS-12 with anxiety/depression scores further supported the convergent validity of EQ-5D. Responses to the EQ-5D dimensions only supported two of the four known group validity hypotheses of higher quality of life among individuals who are better educated and no medical problem. No association was found between income and gender with EQ-5D score.

    CONCLUSION: This study has demonstrated acceptable construct validity of the EQ-5D among the Malaysian population.

  14. Luo N, Fones CS, Thumboo J, Li SC
    Qual Life Res, 2004 Mar;13(2):557-65.
    PMID: 15085928 DOI: 10.1023/B:QURE.0000018484.89711.e2
    As little is known about health-related quality of life (HRQoL) in Asians with anxiety disorders, we assessed HRQoL in Singaporeans with anxiety disorders and identified factors influencing their HRQoL. Outpatients with anxiety disorders (n = 119) attending a hospital psychiatric clinic completed the Short Form 36 Health Survey (SF-36), Beck Anxiety Inventory (BAI) and General Health Questionnaire (GHQ-12). SF-36 score reduction from population norms (quantified as the number of standard deviations below the mean) in these subjects was compared with existing data on Singaporeans with various medical conditions and Americans with panic disorder (PD). Factors influencing HRQoL were examined using stepwise multiple linear regression models. SF-36 score reduction in these subjects (0.3-1.4 SD) was greater than that in Singaporeans with systemic lupus erythematosus or thyroid cancer survivors for seven scales but similar to that in Americans with PD (0.5-1.7 SD). BAI and GHQ-12 scores, presence of PD/generalized anxiety disorder, presence of chronic medical conditions, being married or increasing age accounted for 19-61% of the variance in six selected SF-36 scales. In conclusion, it can be said that Singaporeans with anxiety disorders experience clinically important reductions in HRQoL; both clinical and socio-demographic factors influence HRQoL in such subjects.
    Study site: Neuroscience Psychiatric Clinic, tertiary referral hospital, Singapore
  15. Nagammai T, Mohazmi M, Liew SM, Chinna K, Lai PS
    Qual Life Res, 2015 Aug;24(8):2031-7.
    PMID: 25648757 DOI: 10.1007/s11136-015-0933-7
    PURPOSE: To assess the validity and reliability of the Malay version of the Quality of Life (QOL) Questionnaire of the European Foundation for Osteoporosis (QUALEFFO-41) in Malaysia.
    METHODS: The QUALEFFO-41 was translated from English to Malay and administered to 215 post-menopausal osteoporotic women ≥50 years who could understand Malay, at baseline and 4 weeks. The SF-36 was administered at baseline to assess convergent validity. To assess discriminative validity, patients with and without back pain were recruited.
    RESULTS: Confirmatory factor analysis showed that the QUALEFFO-41 had five domains. Good internal consistency was seen in all domains (0.752-0.925) except for the social activity domain (0.692). Test-retest reliability showed adequate correlation for all items (0.752-0.964, p < 0.001). Patients with back pain had significantly worse QOL compared with those without (back pain = 42.2 ± 10.9, no back pain = 33.3 ± 8.9; p < 0.001). The total QUALEFFO-41 score and the SF-36 physical and mental composite scores were significantly correlated (-0.636 and -0.529, p < 0.001, respectively).
    CONCLUSIONS: The Malay version of the QUALEFFO-41 was found to be a reliable and valid instrument to evaluate the QOL of osteoporotic patients in Malaysia. To enable the QUALEFFO-41 to be used in a multiracial population, further studies should look into validating other versions of the QUALEFFO-41 in Malaysia.
  16. Goh SG, Rusli BN, Khalid BA
    Qual Life Res, 2015 Jul;24(7):1677-86.
    PMID: 25492728 DOI: 10.1007/s11136-014-0885-3
    The aim of this study was to determine ethnic differences and predictors of the perception of quality of life (QOL) in a multiethnic Malaysian population with type 2 diabetes.
  17. Yang Z, Purba FD, Shafie AA, Igarashi A, Wong EL, Lam H, et al.
    Qual Life Res, 2022 Feb 18.
    PMID: 35181827 DOI: 10.1007/s11136-021-03075-x
    INTRODUCTION: Many countries have established their own EQ-5D value sets proceeding on the basis that health preferences differ among countries/populations. So far, published studies focused on comparing value set using TTO data. This study aims to compare the health preferences among 11 Asian populations using the DCE data collected in their EQ-5D-5L valuation studies.

    METHODS: In the EQ-VT protocol, 196 pairs of EQ-5D-5L health states were valued by a general population sample using DCE method for all studies. DCE data were obtained from the study PI. To understand how the health preferences are different/similar with each other, the following analyses were done: (1) the statistical difference between the coefficients; (2) the relative importance of the five EQ-5D dimensions; (3) the relative importance of the response levels.

    RESULTS: The number of statistically differed coefficients between two studies ranged from 2 to 16 (mean: 9.3), out of 20 main effects coefficients. For the relative importance, there is not a universal preference pattern that fits all studies, but with some common characteristics, e.g. mobility is considered the most important; the relative importance of levels are approximately 20% for level 2, 30% for level 3, 70% for level 4 for all studies.

    DISCUSSION: Following a standardized study protocol, there are still considerable differences in the modeling and relative importance results in the EQ-5D-5L DCE data among 11 Asian studies. These findings advocate the use of local value set for calculating health state utility.

  18. Lee WL, Chinna K, Bulgiba A, Abdullah KL, Abidin IZ, Höfer S
    Qual Life Res, 2016 Feb;25(2):351-357.
    PMID: 26254801 DOI: 10.1007/s11136-015-1097-1
    OBJECTIVES: Heart Quality of Life (HeartQoL) is a new "hybrid" developed from the MacNew and two condition-specific questionnaires measuring health-related quality of life (HRQoL) in patients with ischemic heart disease (IHD). This study investigates test-retest reliability of HeartQoL (English version) according to international criteria (e.g., COSMIN, GRRAS). Findings on HeartQoL are compared to the published data on MacNew in view that both serve as the core IHD-specific HRQoL instrument.

    METHODS: Out of 105 patients with IHD, 76 completed self-administration of HeartQoL at the clinic followed by at home within a 2-week interval. In retest, patients responded using non-interview methods (phone messaging, email, fax, and post). Phone interviewing was reserved for non-respondents to reminder.

    RESULTS: Reliability of HeartQoL was good (intraclass correlation coefficients = 0.78-0.82), was supported in the Bland-Altman plot, and was comparable to five studies on MacNew of similar retest interval (MacNew-English = 0.70-0.75; translated MacNew = 0.72-0.91). Applicability of its standard error of measurement (0.20-0.25) and smallest detectable change (0.55-0.70) will depend on availability of normative data in future.

    CONCLUSION: The reliability of HeartQoL is comparable to its parent instrument, the MacNew. The HeartQoL is a potentially reliable core IHD-specific HRQoL instrument in measuring group change.

  19. Jannoo Z, Yap BW, Musa KI, Lazim MA, Hassali MA
    Qual Life Res, 2015 Sep;24(9):2297-302.
    PMID: 25800728 DOI: 10.1007/s11136-015-0969-8
    PURPOSE: The aim of this study was to evaluate and validate the ADDQoL and to assess the impact of diabetes on QoL among the type 2 diabetes mellitus patients in Malaysia.

    METHODS: The Malay and English versions of the ADDQoL questionnaire were administered to patients attending routine outpatient visits in three primary hospitals and a public clinic. The construct validity of the ADDQoL was validated using confirmatory factor analysis (CFA). The sample comprised 350 Malay respondents who rated the ADDQoL Malay version and 246 non-Malay respondents (Chinese or Indian) who answered using the ADDQoL original English version.

    RESULTS: CFA confirmed the presence of one-factor structure for both samples. The internal consistency was high with Cronbach's alpha values of 0.945 and 0.907 for the ADDQoL Malay and English versions, respectively. Results showed that for all three ethnicities, the most important domain is 'family life'. Overall, Malay patients stated their 'living conditions' is the most negatively affected, while for Chinese and Indians, diabetes has the greatest impact on their 'freedom to eat'.

    CONCLUSIONS: The ADDQoL was found to be culturally appropriate, valid and reliable among Malay- and English-speaking type 2 diabetes mellitus patients in Malaysia.

    Study site: routine outpatient visits in three primary hospitals and a public clinic
  20. Lee SC, Moy FM, Hairi NN
    Qual Life Res, 2017 01;26(1):221-227.
    PMID: 27349250 DOI: 10.1007/s11136-016-1348-9
    PURPOSE: The multidimensional scale of perceived social support (MSPSS) was developed to measure perceived social support. It has been translated and culturally adapted among natives literate in the Malay language. However, its psychometric properties for teachers who are majority females and married have not been assessed.

    METHODS: This was a cross-sectional study conducted among the public secondary school teachers in the central region of Peninsular Malaysia from May to July 2013. A total of 150 and 203 teachers were recruited to perform exploratory factor analysis and confirmatory factor analysis (CFA), respectively. Reliability testing was evaluated on 141 teachers via internal consistency and two-week interval test-retest.

    RESULTS: The 12-item three-factor structure of MSPSS-M was revised to 8-item two-factor structure. The revised MSPSS-M demonstrated excellent fit in CFA with adequate divergent and convergent validity and good factor loadings (0.80-0.90). The revised MSPSS-M also displayed good internal consistency with Cronbach's alpha of 0.91, 0.93 and 0.92 and good test-retest reliability with intraclass correlation of 0.89, 0.88 and 0.88 in the total scale, family and friends factors, respectively.

    CONCLUSION: The revised 8-item MSPSS-M is a reliable and valid tool for assessment of perceived social support among teachers.

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