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The European Organization for Research and Treatment of Cancer QLQ-C30: an examination into the cultural validity and reliability of the Turkish version of the EORTC QLQ-C30.
Eur J Cancer Care (Engl). 2004 May; 13(2):135-44.EJ

Abstract

The Turkish version of the European Organization for Research and Treatment of Cancer Quality of Life Core Questionnaire version 2.0 (EORTC QLQ-C30 v.2.0) has started to be used in clinical trials recently. The objective of the study was to evaluate the validity and reliability of the Turkish version of the EORTC QLQ-C30 v.2.0 and the correlation between the Karnofsky Performance Scale (KPS) and the EORTC QLQ-C30. Two hundred and two lung cancer patients were included in the study between January and March 2000. All the subscales met the minimal standards of reliability (Cronbach's alpha > or = 0.70). Only the role functioning scale differed among the three disease stages of patients (local, locoregional and metastatic). There was no statistically significant difference among therapy types. All interscale correlations were statistically significant (P < 0.01). The strongest correlations were found among the physical functioning, role functioning and fatigue scales. Social functioning was closely related with physical, role, emotional and cognitive functioning. The weakest correlations were between nausea/vomiting and the other scales. Global quality of life (QOL) was substantially correlated with most of the scales except cognitive functioning. The coefficients for the correlation between the items differed between 0.12 and 0.97 and all the subscales were strongly correlated with the scales which they formed. The highest correlation between the EORTC QLQ-C30 and KPS was for physical functioning (r = 0.62, P < 0.05). The Turkish version of the EORTC QLQ-C30 is a valid (by means of interscales validity) and reliable instrument for Turkish lung cancer patients and can be used in clinical studies but needs supporting by the reference data on the QOL of the Turkish population.

Authors+Show Affiliations

Izmir-Konak District Health Directorate, Izmir, Turkey. aguzelant@konaksgh.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

15115469

Citation

Guzelant, A, et al. "The European Organization for Research and Treatment of Cancer QLQ-C30: an Examination Into the Cultural Validity and Reliability of the Turkish Version of the EORTC QLQ-C30." European Journal of Cancer Care, vol. 13, no. 2, 2004, pp. 135-44.
Guzelant A, Goksel T, Ozkok S, et al. The European Organization for Research and Treatment of Cancer QLQ-C30: an examination into the cultural validity and reliability of the Turkish version of the EORTC QLQ-C30. Eur J Cancer Care (Engl). 2004;13(2):135-44.
Guzelant, A., Goksel, T., Ozkok, S., Tasbakan, S., Aysan, T., & Bottomley, A. (2004). The European Organization for Research and Treatment of Cancer QLQ-C30: an examination into the cultural validity and reliability of the Turkish version of the EORTC QLQ-C30. European Journal of Cancer Care, 13(2), 135-44.
Guzelant A, et al. The European Organization for Research and Treatment of Cancer QLQ-C30: an Examination Into the Cultural Validity and Reliability of the Turkish Version of the EORTC QLQ-C30. Eur J Cancer Care (Engl). 2004;13(2):135-44. PubMed PMID: 15115469.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The European Organization for Research and Treatment of Cancer QLQ-C30: an examination into the cultural validity and reliability of the Turkish version of the EORTC QLQ-C30. AU - Guzelant,A, AU - Goksel,T, AU - Ozkok,S, AU - Tasbakan,S, AU - Aysan,T, AU - Bottomley,A, PY - 2004/4/30/pubmed PY - 2004/8/17/medline PY - 2004/4/30/entrez SP - 135 EP - 44 JF - European journal of cancer care JO - Eur J Cancer Care (Engl) VL - 13 IS - 2 N2 - The Turkish version of the European Organization for Research and Treatment of Cancer Quality of Life Core Questionnaire version 2.0 (EORTC QLQ-C30 v.2.0) has started to be used in clinical trials recently. The objective of the study was to evaluate the validity and reliability of the Turkish version of the EORTC QLQ-C30 v.2.0 and the correlation between the Karnofsky Performance Scale (KPS) and the EORTC QLQ-C30. Two hundred and two lung cancer patients were included in the study between January and March 2000. All the subscales met the minimal standards of reliability (Cronbach's alpha > or = 0.70). Only the role functioning scale differed among the three disease stages of patients (local, locoregional and metastatic). There was no statistically significant difference among therapy types. All interscale correlations were statistically significant (P < 0.01). The strongest correlations were found among the physical functioning, role functioning and fatigue scales. Social functioning was closely related with physical, role, emotional and cognitive functioning. The weakest correlations were between nausea/vomiting and the other scales. Global quality of life (QOL) was substantially correlated with most of the scales except cognitive functioning. The coefficients for the correlation between the items differed between 0.12 and 0.97 and all the subscales were strongly correlated with the scales which they formed. The highest correlation between the EORTC QLQ-C30 and KPS was for physical functioning (r = 0.62, P < 0.05). The Turkish version of the EORTC QLQ-C30 is a valid (by means of interscales validity) and reliable instrument for Turkish lung cancer patients and can be used in clinical studies but needs supporting by the reference data on the QOL of the Turkish population. SN - 0961-5423 UR - https://www.unboundmedicine.com/medline/citation/15115469/The_European_Organization_for_Research_and_Treatment_of_Cancer_QLQ_C30:_an_examination_into_the_cultural_validity_and_reliability_of_the_Turkish_version_of_the_EORTC_QLQ_C30_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&amp;sid=nlm:pubmed&amp;issn=0961-5423&amp;date=2004&amp;volume=13&amp;issue=2&amp;spage=135 DB - PRIME DP - Unbound Medicine ER -