The Seattle Angina Questionnaire

What do I need to know about the SAQ?

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  1. Priyesh Dr.
    15 October 2011 - 12:35

    a simplest way of defining saq. kindly provide more details aboout it.


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  1. What is the Seattle Angina Questionnaire?

  2. How did the Seattle Angina Questionnaire come to be, and why is it named that?

  3. What are the scales in the SAQ, and what do they mean?


  1. What is the Seattle Angina Questionnaire?

    The Seattle Angina Questionnaire is the leading health-related quality-of-life measure for patients with coronary artery disease. It is a reliable, predictive tool that tracks how patients are doing if they have chest pains (angina), prior heart attacks, angioplasty, stents placed, or bypass surgery. It has been used in hundreds of clinical trials involving thousands of sites and tens of thousands of patients.

  2. How did the Seattle Angina Questionnaire come to be, and why is it named that?

    The Seattle Angina Questionnaire (SAQ) was developed by Dr. John Spertus as a research project during his cardiology fellowship and masters of public health studies at the University of Washington — which is located in Seattle. Although his friends urged him to name it the “Spertus Angina Questionnaire”, John opted to use Seattle in the name.

    John’s process for creating the SAQ included these steps:

    1. He constructed the SAQ’s questions using psychological research that explains how patients understand and communicate about their physical conditions.
    2. He defined a statistical analysis approach that correlates patient responses to the questions to other existing data — such as treadmill results, for instance.
    3. He performed large-scale validation studies that compared SAQ data against these other data and used these results to further refine the questions.

    This work was all done in the early 1990s, and the SAQ has been in regular use in research settings ever since. Its use in regular clinical settings has been limited by the expense and nuisance of using paper forms, which is how nearly all HRQOL measures like the SAQ are deployed. It is only recently that enough patients are finally connected to the Internet that it has become possible to offer a service such as the one that MyHealthOutcomes provides for the SAQ.

  3. What are the scales in the SAQ, and what do they mean?

    The answers patients give to the SAQ’s questions are used to calculate scores in five scales:

    • Anginal Stability: a measure of whether a patient’s symptoms are changing over time
    • Anginal Frequency: a measure of how often a patient is having symptoms now
    • Physical Limitation: a measure of how much a patient’s condition is hampering his ability to do what he wants to do
    • Treatment Satisfaction: a measure of well a patient understands her care and what she thinks of it
    • Quality of Life: a measure of the overall impact of a patient’s condition on a patient’s interpersonal relationships and state of mind