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How many times have you had to take nitroglycerin (nitroglycerin tablets or spray) for your chest pain, chest tightness or angina over the past 4 weeks [SAQ]

How many times have you had to take nitroglycerin (nitroglycerin tablets or spray) for your chest pain, chest tightness or angina on average over the past 4W, a finding in the patient by SAQ, an ordinal result. General health survey.