Physician survey on knowledge and reporting practices of transfusion-transmitted infections in Canada.

Objective: To assess physicians' knowledge and reporting practices of transfusion-transmitted infections (TTI).

Design: Cross-sectional postal survey.

Target Population: Family physicians and specialists.

Drug resistance study of Mycobacterium tuberculosis in Canada, February 1, 1993 to January 31, 1994.

Objective: To estimate the prevalence of resistance of Mycobacterium tuberculosis to first-line antituberculosis drugs in Canada.

Methods: M. tuberculosis isolates from one third of all culture-positive tuberculosis (TB) cases diagnosed between February 1, 1993 to January 31, 1994 in Canada were collected prospectively.

Cigarette smoking and peripheral arterial occlusive disease.

Background: The importance of cigarette smoking in the etiology of peripheral arterial occlusive disease is well known, but there have been few studies that have quantified this relationship.

Methods: A case-control study design was used in which the case subjects were men with a history of claudication for at least 1 year and abnormal findings on noninvasive blood flow studies or on arteriography; control subjects were men attending the same hospital for conditions other than cancer, with no history of cancer or vascular disease and with a normal ankle-brachial index. Case and control subjects were interviewed by a trained nurse interviewer using a pilot-tested questionnaire.