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

Kleijn, Wim Chr.; Ogoshi, Kyoji; Yamaoka, Kazue; Shigehisa, Tsuyoshi; Takeda, Yuichiro; Creutzberg, Carien L.; Nortier, J.W.R.; Kaptein, Adrian A.

doi:10.1007/s11136-006-0049-1

Cited by 11 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…determine the emotional response to cancer, participation in screening, use and compliance with treatment, and the relationship between health professionals and patients" (p. 123). In earlier studies we found that Japanese and Dutch patients with various types of cancer (breast, colon, lung, prostate) responded in a quite similar way to a fairly large set of QOL questionnaires; differences were found mainly on the social dimensions of QOL Kleijn et al, 2006).…”

Section: Introductionmentioning

confidence: 81%

Illness Perceptions and Quality of Life in Japanese and Dutch Women with Breast Cancer

Kaptein

Yamaoka

Snoei

et al. 2013

Journal of Psychosocial Oncology

View full text Add to dashboard Cite

Knowledge on cross-cultural quality of life (QOL) and illness perceptions may help women with breast cancer cope more effectively. The self regulation model (SRM) guided the current exploratory longitudinal pilot-study. Central to SRM is the perception of health threats and their effects on QOL. Illness perceptions and QOL were assessed in 22 Dutch and 21 Japanese patients with breast cancer who filled out questionnaires before, 1 week, and 8 weeks after the first chemotherapy course. The questionnaires assessed QOL and illness perceptions. Patients' scores were compared with groups of patients with other chronic somatic illnesses (asthma, diabetes). Patients in both samples reported major impact of chemotherapy on global health status, physical functioning, role functioning, emotional functioning, constipation and diarrhea. Differences between Japanese and Dutch patients were limited to social functioning and financial problems. Japanese patients expressed stronger concerns about their illness than Dutch patients. Results of the Japanese and Dutch patients with breast cancer differed from data in patients with asthma on consequences, timeline, concern and emotional response. Results of Japanese patients differed from patients with type 2 diabetes on timeline and concern, whereas Dutch patients differed on timeline and consequences. Japanese and Dutch breast cancer patients have-overall-similar illness perceptions and QOL responses and are aware of the typical characteristics of their disease. The results support the feasibility of cross-cultural psychosocial research in oncology and offer implications for clinical interventions which impact on self-efficacy to empower patients with breast cancer.

show abstract

Section: Introductionmentioning

confidence: 81%

Illness Perceptions and Quality of Life in Japanese and Dutch Women with Breast Cancer

Kaptein

Yamaoka

Snoei

et al. 2013

Journal of Psychosocial Oncology

View full text Add to dashboard Cite

show abstract

“…Two published articles contrasting the structure of the EORTC QLQ-C30 across multiple cultural/ethnic groups were identified, both based on relatively small samples. One suggested an equivalent factor structure for Caucasians and Asian/Pacific Islanders in Hawaii [7]; another found similar conceptual equivalence of the concept of HRQoL in the Netherlands and Japan [8].…”

Section: Introductionmentioning

confidence: 94%

The relationship between overall quality of life and its subdimensions was influenced by culture: analysis of an international database

Scott

Fayers

Aaronson

et al. 2008

Journal of Clinical Epidemiology

View full text Add to dashboard Cite

“…As a consequence, patients’ Quality of Life (QoL) has become one of the main outcomes of treatment. Although Japanese and European cancer patients previously have shown considerable equivalence with regard to the concept of QoL [ 3 ], cross-cultural comparisons between Asian and European breast cancer patient samples have seldom been performed [ 4 ]. One study showed that Japanese women with breast cancer report better physical QoL than German women, but found no difference between countries with regard to emotional well-being [ 5 ].…”

Section: Background and Rationalementioning

confidence: 99%

Cross-cultural comparison of breast cancer patients’ Quality of Life in the Netherlands and Japan

Fischer

Inoue

Matsuda

et al. 2017

Breast Cancer Res Treat

Self Cite

View full text Add to dashboard Cite

PurposeCultural differences are hypothesized to influence patients’ Quality of Life (QoL) reports. However, there is a lack of empirical cross-cultural studies comparing QoL of patients with cancer. This study aims to compare QoL of women with breast cancer in the Netherlands and Japan, and to investigate the association of QoL with sociodemographic, clinical, and psychological variables (illness perceptions).MethodsDutch (n = 116) and Japanese (n = 148) women with early breast cancer undergoing chemotherapy completed the EORTC QLQ-C30 and Brief Illness Perception Questionnaire immediately before their second cycle of chemotherapy.ResultsDutch women reported poorer Physical, Role, Emotional, and Cognitive functioning than Japanese women. Additionally, illness perceptions were significantly different in Japan and the Netherlands, but these did not vary across treatment type. In Japan, QoL of women receiving AC-chemotherapy was better than that of women receiving FEC-chemotherapy, whereas in the Netherlands, QoL did not vary as a function of chemotherapy. Illness perceptions about symptom severity, adverse consequences, and emotional representations were negatively related to most domains of patients’ QoL in both countries. Adding illness perceptions as covariates to the ANOVA analyses rendered the effects of country and treatment type on QoL non-significant.ConclusionsComparing Dutch and Japanese women with early breast cancer revealed important differences in treatment modalities and illness perceptions which both appear to influence QoL. Perceptions about cancer have been found to vary across cultures, and our study suggests that these perceptions should be considered when performing cross-cultural studies focusing on patient-reported outcomes.

show abstract

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

Cited by 11 publications

References 20 publications

Illness Perceptions and Quality of Life in Japanese and Dutch Women with Breast Cancer

Illness Perceptions and Quality of Life in Japanese and Dutch Women with Breast Cancer

The relationship between overall quality of life and its subdimensions was influenced by culture: analysis of an international database

Cross-cultural comparison of breast cancer patients’ Quality of Life in the Netherlands and Japan

Contact Info

Product

Resources

About