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 Agirbasli51
Department of Physical Medicine and Rehabilitation, Division of Rheumatology, Marmara University School of Medicine, İstanbul, Turkey2
Department of Physical Medicine and Rehabilitation, Marmara University School of Medicine, İstanbul, Turkey3
Department of Physical Medicine and Rehabilitation, Division of Pain Medicine, Çukurova University School of Medicine, İstanbul, Turkey4
Department of Rehabilitation Medicine, University of Malaya, Kuala Lumpur, Malaysia5
Department 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). Cronbachs alpha coefficient was used to evaluate internal consistency. Spearmans 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). Cronbachs 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.
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