Satomi Seki1, Naoko Kato1, Naomi Ito2, Koichiro Kinugawa3, Minoru Ono4, Noboru Motomura5, Atsushi Yao6, Masafumi Watanabe6, Yasushi Imai6, Norihiko Takeda6, Masashi Inoue6, Masaru Hatano7, Keiko Kazuma8. 1. Department of Adult Nursing, University of Tokyo, Tokyo, Japan. 2. Assistant Professor, Department of Adult Nursing, University of Tokyo, Tokyo, Japan. 3. Associate Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan. 4. Professor, Department of Cardiovascular Surgery, University of Tokyo, Tokyo, Japan. 5. Associate Professor, Department of Cardiovascular Surgery, University of Tokyo, Tokyo, Japan. 6. Assistant Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan. 7. Department of Cardiovascular Medicine, University of Tokyo, Japan. 8. Professor, Department of Adult Nursing, University of Tokyo, Tokyo, Japan.
Abstract
PURPOSE: The aim of this study was to evaluate the validity and reliability of the Seattle Angina Questionnaire, Japanese version (SAQ-J) as a disease-specific health outcome scale in patients with coronary artery disease. METHODS: Patients with coronary artery disease were recruited from a university hospital in Tokyo. The patients completed self-administered questionnaires, and medical information was obtained from the subjects' medical records. Face validity, concurrent validity evaluated using Short Form 36 (SF-36), known group differences, internal consistency, and test-retest reliability were statistically analyzed. RESULTS: A total of 354 patients gave informed consent, and 331 of them responded (93.5%). The concurrent validity was mostly supported by the pattern of association between SAQ-J and SF-36. The patients without chest symptoms showed significantly higher SAQ-J scores than did the patients with chest symptoms in 4 domains. Cronbach's alpha ranged from .51 to .96, meaning that internal consistency was confirmed to a certain extent. The intraclass correlation coefficient of most domains was higher than the recommended value of 0.70. The weighted kappa ranged from .24 to .57, and it was greater than .4 for 14 of the 19 items. CONCLUSIONS: The SAQ-J could be a valid and reliable disease-specific scale in some part for measuring health outcomes in patients with coronary artery disease, and requires cautious use.
PURPOSE: The aim of this study was to evaluate the validity and reliability of the Seattle Angina Questionnaire, Japanese version (SAQ-J) as a disease-specific health outcome scale in patients with coronary artery disease. METHODS:Patients with coronary artery disease were recruited from a university hospital in Tokyo. The patients completed self-administered questionnaires, and medical information was obtained from the subjects' medical records. Face validity, concurrent validity evaluated using Short Form 36 (SF-36), known group differences, internal consistency, and test-retest reliability were statistically analyzed. RESULTS: A total of 354 patients gave informed consent, and 331 of them responded (93.5%). The concurrent validity was mostly supported by the pattern of association between SAQ-J and SF-36. The patients without chest symptoms showed significantly higher SAQ-J scores than did the patients with chest symptoms in 4 domains. Cronbach's alpha ranged from .51 to .96, meaning that internal consistency was confirmed to a certain extent. The intraclass correlation coefficient of most domains was higher than the recommended value of 0.70. The weighted kappa ranged from .24 to .57, and it was greater than .4 for 14 of the 19 items. CONCLUSIONS: The SAQ-J could be a valid and reliable disease-specific scale in some part for measuring health outcomes in patients with coronary artery disease, and requires cautious use.
Authors: Ruth Masterson Creber; Arnaldo Dimagli; Cristiano Spadaccio; Annie Myers; Marco Moscarelli; Michelle Demetres; Matthew Little; Stephen Fremes; Mario Gaudino Journal: Eur Heart J Qual Care Clin Outcomes Date: 2022-05-05