Asian Nursing Research
Volume 4, Issue 2 , Pages 57-63, June 2010

Validity and Reliability of Seattle Angina Questionnaire Japanese Version in Patients With Coronary Artery Disease

  • Satomi Seki, RN, MSN

      Affiliations

    • Department of Adult Nursing, University of Tokyo, Tokyo, Japan
    • Corresponding Author InformationCorrespondence to: Satomi Seki, RN, MSN, Department of Adult Nursing, University of Tokyo, 2-20-1-106 Chuohoncho Adachiku, Tokyo 120-0011, Japan
    • ,
  • Naoko Kato, RN, MSN

      Affiliations

    • Department of Adult Nursing, University of Tokyo, Tokyo, Japan
    • ,
  • Naomi Ito, RN, PhD

      Affiliations

    • Assistant Professor, Department of Adult Nursing, University of Tokyo, Tokyo, Japan
    • ,
  • Koichiro Kinugawa, MD, PhD

      Affiliations

    • Associate Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan
    • ,
  • Minoru Ono, MD, PhD

      Affiliations

    • Professor, Department of Cardiovascular Surgery, University of Tokyo, Tokyo, Japan
    • ,
  • Noboru Motomura, MD, PhD

      Affiliations

    • Associate Professor, Department of Cardiovascular Surgery, University of Tokyo, Tokyo, Japan
    • ,
  • Atsushi Yao, MD, PhD

      Affiliations

    • Assistant Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan
    • ,
  • Masafumi Watanabe, MD, PhD

      Affiliations

    • Assistant Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan
    • ,
  • Yasushi Imai, MD, PhD

      Affiliations

    • Assistant Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan
    • ,
  • Norihiko Takeda, MD, PhD

      Affiliations

    • Assistant Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan
    • ,
  • Masashi Inoue, MD, PhD

      Affiliations

    • Assistant Professor, Department of Cardiovascular Medicine, University of Tokyo, Tokyo, Japan
    • ,
  • Masaru Hatano, MD, PhD

      Affiliations

    • Department of Cardiovascular Medicine, University of Tokyo, Japan
    • ,
  • Keiko Kazuma, RN, PhD

      Affiliations

    • Professor, Department of Adult Nursing, University of Tokyo, Tokyo, Japan

Received 14 February 2010; received in revised form 12 March 2010; accepted 27 March 2010.

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.

Key Words:  coronary artery disease , reliability , scale , validity

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PII: S1976-1317(10)60006-0

doi:10.1016/S1976-1317(10)60006-0

Asian Nursing Research
Volume 4, Issue 2 , Pages 57-63, June 2010

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