The validity and reliability of the Turkish version of the Seattle Angina Questionnaire [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. 2020; 48(8): 731-738 | DOI: 10.5543/tkda.2020.24583

The validity and reliability of the Turkish version of the Seattle Angina Questionnaire

Mehmet Tuncay Duruöz1, Canan Şanal Toprak2, Fırat Ulutatar3, Anwar Suhaimi4, Mehmet Agirbasli5
1Department of Physical Medicine and Rehabilitation, Division of Rheumatology, Marmara University School of Medicine, İstanbul, Turkey
2Department of Physical Medicine and Rehabilitation, Marmara University School of Medicine, İstanbul, Turkey
3Department of Physical Medicine and Rehabilitation, Division of Pain Medicine, Çukurova University School of Medicine, İstanbul, Turkey
4Department of Rehabilitation Medicine, University of Malaya, Kuala Lumpur, Malaysia
5Department of Cardiology, İstanbul Medeniyet University School of Medicine, İstanbul, Turkey


OBJECTIVE
The purpose of this study was to assess the validity and reliability of a Turkish version of the Seattle Angina Questionnaire (SAQ) in patients with coronary heart disease (CHD) and angina.


METHODS
The SAQ was translated from English to Turkish using the back-translation method. It contains 19 questions scored from 1 to either 5 or 6 in 5 domains (physical limitation, angina stability, angina frequency, disease perception, and treatment satisfaction). Cronbach’s alpha coefficient was used to evaluate internal consistency. Spearman’s rank correlation coefficient was calculated to assess the construct validity. Convergent validity was examined using correlations between the SAQ and the MacNew Heart Disease Health-related Quality of Life Questionnaire (MacNew) and the Nottingham Health Profile. Divergent validity was evaluated using correlations between the SAQ and age, body mass index (BMI), gender, and the marital status of patients. A value of p<0.05 was considered statistically significant.


RESULTS
Sixty-seven patients were enrolled in the study. The mean age of the study patients was 58.7 years (SD: 10.2). Cronbach’s alpha scores of the SAQ, ranging in value from 0.715 to 0.910, demonstrated that this scale is reliable. All of the SAQ scales had a significant correlation with all of the MacNew scales, which indicated that the scale has convergent validity. Insignificant correlations with age, BMI, gender, and marital status illustrated the good divergent validity of the scale.


CONCLUSION
The Turkish version of the SAQ is a valid and reliable instrument. It is a useful and practical tool to evaluate patients with angina and CHD.

Keywords: Angina, quality of life, reliability; Seattle Angina Questionnaire; validity.

How to cite this article
Mehmet Tuncay Duruöz, Canan Şanal Toprak, Fırat Ulutatar, Anwar Suhaimi, Mehmet Agirbasli. The validity and reliability of the Turkish version of the Seattle Angina Questionnaire. Turk Kardiyol Dern Ars. 2020; 48(8): 731-738

Corresponding Author: Canan Şanal Toprak, Türkiye
© Copyright 2021 Archives of the Turkish Society of Cardiology
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