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Journal of Basic and Clinical Health Sciences 2019 , Vol 3 , Issue 3
The Psychometric Properties and Clinical Use of the Turkish Version of the Functional Assessment of Cancer Therapy–Lung (FACT-L) Scale
Burcu Başarık Aydoğan1,Tuncay Göksel2,Ahmet Emin Erbaycu3,Aysen Öz4,Pınar Çelik5,Kader Kıyar Gürsul6,Ebru Çakır Edis7,Osman Hatipoğlu7,Bedriye Atay Yayla8,Sevin Başer9,Hakan Baydur10,Erhan Eser11
1Denizli State Hospital, Intensive Care Unit, Denizli, Turkey
2Ege University, School of Medicine, Chest Diseases, İzmir, Turkey
3Izmir Dr. Suat Seren Chest Diseases and Thoracic Surgery Training and Research Hospital, Chest Diseases, İzmir, Turkey
4Nevşehir State Hospital, Chest Diseases, Nevşehir, Turkey
5Celal Bayar University, School of Medicine, Chest Diseases, Manisa, Turkey
6Elazığ State Hospital, Chest Diseases, Elazığ, Turkey
7Trakya University, School of Medicine, Chest Diseases, Edirne, Turkey
8Servergazi State Hospital, Chest Diseases, Denizli, Turkey
9Pamukkale University, School of Medicine, Chest Diseases, Denizli, Turkey
10Celal Bayar University Faculty of Health Sciences, Social Work, Manisa, Turkey
11Celal Bayar University, School of Medicine, Public Health, Manisa, Turkey
DOI : 10.30621/jbachs.2019.652 Objectives: psychometric properties of the Turkish version of the Functional Assessment of Cancer Therapy-Lung (FACT-L) scale and the sensitivity to changes in clinical indicators.

Patients and Methods: This study was conducted within the framework of a national multicentre project. Patients with either stage IIIB or IV primary lung cancer diagnosed after April 2010were included in thisstudy. A classical confirmatory approach was used for both the reliability and validity analyses. Internal consistency was tested using Cronbach"s α value, and the validity analysis was performed using construct validity and clinical validity.

Results: 276 (92.3%) patients were male and the average age was 60.8 ± 9.4 years. The most frequently observed histological type was squamous cell carcinoma (36.8%), and 61.5% of these stage IV tumours. Cronbachs α values for the subscales ranged from 0.60 to 0.84. The majority of the FACT-L subscales revealed inter-scale correlation coefficients greater than 0.35. All sub-dimensions, except that of the social/family well-being scale, are able to significantly discriminate between stages IIIB and IV. Significantly lower scale scores were detected in patients with stage IV than stage IIIB. The comparative fit index was 0.917, and the root mean square error of approximation was 0.091. Dyspnoea, haemoptysis, chest pain, weight loss, anorexia, localised pain, and fever symptoms had a significant correlation with the FACT-L, trial outcome index, and lung cancer subscale.

Conclusion: Turkish version of the psychometric properties of the original FACT-L scale is regarded as a valid and reliable tool and can be used safely in a clinical context when managing patients with lung cancer in Turkey. Keywords : Lung cancer, quality of life, FACT-L