The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30): Validation Study of the Thai Version

Silpakit, Chatchawan; Sirilerttrakul, Suwannee; Jirajarus, Manmana; Sirisinha, Thitiya; Sirachainan, Ekaphop; Ratanatharathorn, V.

doi:10.1007/s11136-005-0449-7

Cited by 39 publications

(30 citation statements)

References 18 publications

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“…Our results indicate that the reliability analysis for multi-item subscales yielded very similar results to the Western, Iranian, Korean and Japanese studies (Aaronson et al 1993;Kobayashi et al 1998;Montazeri et al 1999;Yun et al 2004). The low Cronbach's alpha-coefficient for cognitive functioning subscale is also found in the original (Aaronson et al 1993) and other studies of different cultures (Kobayashi et al 1998;Montazeri et al 1999;Yun et al 2004;Luo et al 2005;Silpakit et al 2006). Although this sub- scale has poor psychometric properties, it is proposed to include clinically relevant items (Luo et al 2005).…”

Section: Discussionsupporting

confidence: 79%

Understanding the reliability and validity of the EORTC QLQ-C30 in Turkish cancer patients

Cankurtaran¹,

Özalp²,

Soygür³

et al. 2007

Eur J Cancer Care

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Quality of life (QOL) has become an important area to address. The most commonly used QOL tool in oncology is the European Organization for Research and Treatment of Cancer QOL measure (EORTC QLQ-C30). The aim of this study is to examine the reliability and validity of this widely used questionnaire in Turkish language. A total of 114 cancer patients were recruited in this study. The internal consistency of the subscales, concurrent validity between EORTC QLQ-C30 version 3.0 and Short Form-36 (SF-36), the correlations between the subscales of EORTC QLQ-C30 and Hospital Anxiety and Depression scale-Anxiety (HADS-A), and Hospital Anxiety and Depression scale-Depression (HADS-D) were also evaluated. Cronbach's alpha-coefficient for multi-item scales ranged from 0.56 to 0.85, with emotional functioning having the highest Cronbach's alpha-coefficient. General health/QOL subscale was correlated significantly with all other subscales. Modest correlations were found between relevant subscales of SF-36 and EORTC QLQ-C30 scales indicating good convergent validity. Although score of emotional functioning subscale was significantly correlated with HADS-A, no correlation was found with HADS-D. The correlations between general health/QOL and HADS-A and HADS-D were significant though Pearson's coefficients were below 0.4. The EORTC QLQ-C30 version 3.0 is a reliable and valid instrument and suitable for measuring the QOL in cancer patients in Turkey.

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Section: Discussionsupporting

confidence: 79%

Understanding the reliability and validity of the EORTC QLQ-C30 in Turkish cancer patients

Cankurtaran¹,

Özalp²,

Soygür³

et al. 2007

Eur J Cancer Care

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“…This observation was reported in Mexican patients with gastric cancer (Oñate-Ocaña et al 2009), similar to Taiwanese (Huang et al 2007), Thai (Silpakit et al 2006), English (Sprangers et al 1996) and Greek version of the EORTC-QLQ-C30 (Kontodimopoulos et al 2011). This observation was reported in Mexican patients with gastric cancer (Oñate-Ocaña et al 2009), similar to Taiwanese (Huang et al 2007), Thai (Silpakit et al 2006), English (Sprangers et al 1996) and Greek version of the EORTC-QLQ-C30 (Kontodimopoulos et al 2011).…”

Section: Discussionsupporting

confidence: 72%

Validation of the Mexican-Spanish version of the EORTC QLQ-C30 and BR23 questionnaires to assess health-related quality of life in Mexican women with breast cancer

Cerezo

Oñate‐Ocaña

Arrieta-Joffe

et al. 2012

European Journal of Cancer Care

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The aim of this study was to validate the Mexican-Spanish version of The European Organization for Research and Treatment of Cancer (EORTC) QLQ-BR23 questionnaire. The translation procedure followed EORTC guidelines. QLQ-C30 and QLQ-BR23 instruments were completed by Mexican women with breast cancer, attending a teaching referral cancer centre from February 2009 to January 2010. Patients were divided in two groups: (1) Patients with early stage of breast cancer; and (2) Patients with locally advanced breast cancer (LABC). Reliability and validity tests were performed, and validity over time (responsiveness) was conducted in a subset of patients. Two hundred and thirty-four women (mean age, 52.3 years) completed both questionnaires. Convergent and divergent validity was adequate. Cronbach's alpha of all multi-item scales showed values ≥0.7 except for Cognitive and Breast symptoms scales (0.52 and 0.65 respectively). Patients with early stages (n= 77) showed better functional scores and lower symptoms scores than patients with LABC (n= 157). Score means variation after responsiveness analysis demonstrated high sensitivity to change after breast cancer surgery. The Mexican-Spanish version of the EORTC QLQ-BR23 questionnaire is a valid and suitable instrument to estimate HRQL in patients with breast cancer.

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“…Other studies showed similar values, ranging from 0.62 to 0.94 [6][7][8]10,23 . For the BR23 module, internal consistencies for functional and symptom scales were 0.78 and 0.83, respectively.…”

Section: Discussionmentioning

confidence: 57%

“…In order to observe whether the questionnaire was capable of discriminating different situations 8 , mean scores of women with lymphedema and without it were compared by using the Mann-Whitney test. It is expected that women with lymphedema have a poorer quality of life in comparison with the ones without it.…”

Section: Methodsmentioning

confidence: 99%

Validity, reliability and understanding of the EORTC-C30 and EORTC-BR23, quality of life questionnaires specific for breast cancer

Michels

Latorre

Maciel

2013

Rev. bras. epidemiol.

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Objective: To validate and assess reliability and understanding of the EORTC-C30 quality of life questionnaire and its breast cancer specific module, the EORTC-BR23. Methods: This study was conducted at the AC Camargo Cancer Hospital, São Paulo, Brazil. A total of 100 women diagnosed with breast cancer were interviewed. Internal consistency, confirmatory factorial analysis, convergent validity, construct validity and degree of understanding were examined. Reliability was assessed by comparison of means at times 1 and 2, inter-class coefficient and Bland-Altman graphics. Results: Cronbach's alpha ranged from 0.72 to 0.86 for the EORTC-C30 and from 0.78 to 0.83 for the EORTC-BR23 questionnaire. Most questions were confirmed in the confirmatory factorial analysis. In the construct validity analysis, the questionnaires were capable of differentiating patients with or without lymphedema, apart from the symptom scales of both questionnaires. Both questionnaires presented a significant correlation in most domains of the SF-36, in the convergent validity analysis. Only a few criticisms were reported concerning questions, and the mean grade of understanding was high (C30 = 4.91 and BR23 = 4.89). The questionnaires presented good rates of reliability, with the exception of the functional scale of the C30 and the symptom scale of the BR23. Conclusions: The EORTC-C30 and EORTC-BR23 quality of life questionnaires were validated, presented good rates of reliability and are easily understood, allowing them to be used in Brazil to assess quality of life among women with breast cancer. Keywords

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The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30): Validation Study of the Thai Version

Cited by 39 publications

References 18 publications

Understanding the reliability and validity of the EORTC QLQ-C30 in Turkish cancer patients

Understanding the reliability and validity of the EORTC QLQ-C30 in Turkish cancer patients

Validation of the Mexican-Spanish version of the EORTC QLQ-C30 and BR23 questionnaires to assess health-related quality of life in Mexican women with breast cancer

Validity, reliability and understanding of the EORTC-C30 and EORTC-BR23, quality of life questionnaires specific for breast cancer

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