A cross-validation of the European organization for research and treatment of cancer QLQ-C30 (EORTC QLQ-C30) for Japanese with Lung Cancer

Kobayashi, Kunihiko; Takeda, Fumikazu; Teramukai, Satoshi; Gotoh, Isao; Sakai, Hiroshi; Yoneda, Shuichi; Noguchi, Yukio; Ogasawara, Hideto; Yoshida, Kiyokazu

doi:10.1016/s0959-8049(97)00395-x

Cited by 226 publications

(154 citation statements)

References 8 publications

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“…We can only partly confirm the observations of Kobayashi et al [4] of relatively high correlations in Japanese patients between the somatic and emotional scales of the EORTC-QLQ-C30 and Aaronson et al's [2] relatively lower correlations of these scales in European patients. We found a high correlation between the Physical and Psychological scales of the HRQoL-20, but we did so for both patients groups, irrespective of country of origin.…”

Section: Discussionsupporting

confidence: 47%

“…It has been translated and validated into many languages, among which are Dutch and Japanese [2,4]. It comprises two overall scales (one on general health and one on overall QOL), five functional subscales (measuring role, emotional, cognitive and social functioning), and nine symptom subscales (measuring specific symptoms).…”

Section: Instrumentsmentioning

confidence: 99%

“…These authors state that clinicians in Japan reporting on QOL research have generally been interested in the use of methods that primarily measure the physical aspects of QOL. However, some Japanese researchers have evaluated the multidimensional QOL of cancer patients, employing either Japanese translations of Western measures, or HR-QOL instruments developed in Japan such as the HRQoL-20 [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Kobayashi et al [4] translated the EORTC-QLQ-C30 into Japanese and compared the scores of Japanese lung cancer patients with European patients. They stated that ''both the Japanese language and culture are vastly different from those of English speaking countries'', but confirmed the cross-cultural functional equivalence and concluded that this instrument can be used in international phase III studies.…”

Section: Introductionmentioning

confidence: 99%

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Conceptual equivalence and health-related quality of life: an exploratory study in Japanese and Dutch cancer patients

et al. 2006

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Research into the equivalence of Western and Japanese conceptualizations of health-related quality of life (HR-QOL) is scarce. We used the Western (European Organization for Research and Treatment of Cancer, EORTC-QLQ-C30) and the Japanese questionnaire in order to analyze the conceptual similarity of HR-QOL factors, and the associations between specific symptom items with overall HR-QOL in Japanese (n=265) and Dutch (n=174) patients with various types of cancer. Both populations completed both instruments. In both patient groups, the overall health scale of the EORTC-QLQ-C30 correlated highly (r=0.59; p<0.001) with the HRQOL-20 composite average score, indicating substantial conceptual comparability. Relationships between all EORTC-QLQ-C30 symptom items with HR-QOL were examined by ranking their correlations with the two overall measures of HR-QOL. Comparable patterns in the Japanese and Dutch samples were observed. The results suggest a considerable conceptual equivalence of HR-QOL in Japanese and Dutch cancer patients, and indicate a satisfactory structural and cross-cultural equivalence for the EORTC-QLQ-C30 with regard to items measuring functioning and specific symptoms. Longitudinal studies are needed to examine the impact of specific symptoms on general quality of life.

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Section: Discussionsupporting

confidence: 47%

Section: Instrumentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Conceptual equivalence and health-related quality of life: an exploratory study in Japanese and Dutch cancer patients

et al. 2006

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“…We found that physical limitation is the main correlate of not working and it may be caused by the fact that ECOG performance status was highly correlated with physical functioning (Kobayashi et al, 1998).…”

Section: Discussionmentioning

confidence: 83%

Employment status and work-related difficulties in stomach cancer survivors compared with the general population

Lee

Bae

et al. 2008

Br J Cancer

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Little was known about work situation and work-related difficulties, including housework after stomach cancer diagnosis. We aimed to compare employment status and work-related difficulties between stomach cancer survivors and the general population. We enrolled 408 stomach cancer survivors from two hospitals 28 months after diagnosis and 994 representative volunteers from the general population from 15 geographic districts. Working was defined as being employed (including self-employed) and nonworking as being retired or a homemaker. Nonworking was significantly higher among stomach cancer survivors (46.6%) than in the general population (36.5%). Compared with the general population, the survivors had more fatigue in performing both housework (adjusted odds ratio (aOR) ¼ 2.08; 95% confidence interval (95% CI) ¼ 1.01 -4.29) and gainful work (aOR ¼ 4.02; 2.55 -6.33). More cancer survivors had reduced working hours (aOR ¼ 1.42; 95% CI ¼ 4.60 -28.35) and reduced work-related ability (aOR ¼ 6.11; 95% CI ¼ 3.64 -10.27) than did the general population. The association of nonworking with older age and being female was significantly more positive for survivors than for the general population. Among survivors, poorer Eastern Cooperation Oncology Group Performance Status and receiving total gastrectomy were positively associated with nonworking. Stomach cancer survivors experienced more difficulties in both housework and gainful employment than did the general population. Our findings on stomach cancer survivors' work-related difficulties and the predictors of nonworking will help physicians guide patients towards more realistic postsurgical employment plans.

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Comparison of 5‐year postoperative outcomes after Billroth I and Roux‐en‐Y reconstruction following distal gastrectomy for gastric cancer: Results from a multi‐institutional randomized controlled trial

Kimura

Mikami

Yamasaki

et al. 2020

Annals of Gastroent Surgery

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Aim We previously reported in a randomized controlled trial that Billroth I and Roux‐en‐Y reconstructions were generally equivalent regarding body weight change and nutritional status 1 year after distal gastrectomy for gastric cancer. We describe the long‐term follow‐up data 5 years after distal gastrectomy. Methods We analyzed consecutive gastric cancer patients who were randomly assigned to undergo Billroth I or Roux‐en‐Y reconstruction after distal gastrectomy. We evaluated body weight change, nutritional status, late complications, quality of life (QOL) using the European Organization for Research and Treatment of Cancer Core QOL Questionnaire, and dysfunction using the Dysfunction After Upper Gastrointestinal Surgery for Cancer, 5 years after surgery. Results A total of 228 patients (Billroth I = 105; Roux‐en‐Y = 123) were eligible for efficacy analyses in this study. Body weight loss 5 years after surgery did not differ significantly between the Billroth I and Roux‐en‐Y groups (10.0% ± 7.9% and 9.6% ± 8.4%, respectively; P = .70). There were no significant differences in other aspects of nutritional status between the two groups. Reflux esophagitis occurred in 19.0% of the patients in the Billroth I group vs 4.9% in the Roux‐en‐Y group (P = .002). Regarding QOL, Billroth I was significantly inferior to Roux‐en‐Y on the diarrhea scale (Billroth I: 28.6, Roux‐en‐Y: 16.0; P = .047). Regarding dysfunction, no score differed significantly between the two groups. Conclusions Billroth I and Roux‐en‐Y reconstructions were generally equivalent regarding body weight change, nutritional status, and QOL 5 years after distal gastrectomy, although Roux‐en‐Y more effectively prevented reflux esophagitis and diarrhea.

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A cross-validation of the European organization for research and treatment of cancer QLQ-C30 (EORTC QLQ-C30) for Japanese with Lung Cancer

Cited by 226 publications

References 8 publications

Conceptual equivalence and health-related quality of life: an exploratory study in Japanese and Dutch cancer patients

Conceptual equivalence and health-related quality of life: an exploratory study in Japanese and Dutch cancer patients

Employment status and work-related difficulties in stomach cancer survivors compared with the general population

Comparison of 5‐year postoperative outcomes after Billroth I and Roux‐en‐Y reconstruction following distal gastrectomy for gastric cancer: Results from a multi‐institutional randomized controlled trial

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