Community-based surveillance of acute ischemic heart disease: are one-time mailed questionnaires to physicians useful?


A 12-month data collection from medical records in Seattle/King County for acute ischemic heart disease among patients with diabetes mellitus was augmented with mailed questionnaires to personal physicians. The responsible Human Subjects Committee restricted the study to a one-time questionnaire mailing. Only 380 of 1,235 patients required physician contact… (More)


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