Effect of Type A behavior on exercise test outcome in coronary artery disease.
Published
Journal Article
The outcome of the diagnostic exercise test depends on such patient-related factors as age, maximum exercise heart rate, exercise time and severity of the underlying coronary artery disease (CAD). This study examined the hypothesis that type A behavior would affect the amount of effort expended, as indicated by the exercise time and the maximum heart rate achieved, thereby resulting in differences in exercise test outcome. A total of 1,260 patients with suspected CAD, all of whom had coronary angiography, a structured interview to assess type A behavior and a treadmill exercise test, participated. Of these patients, 818 (65%) had significant CAD, and 852 (68%) were type A. There were no differences between type A and B patients in either maximum heart rate or total exercise time. Among both type A and B subjects, 36% of treadmill tests were positive. Exercise test sensitivity was similar for both groups (69% for type A vs 72% for type B, p = 0.39). Similarly, specificity was similar for both groups (87% for type A vs 80% for type B, p = 0.09). Results did not change after using logistic regression to control for potential confounding factors. Thus, type A behavior does not need to be taken into account when interpreting exercise test outcome.
Full Text
Duke Authors
Cited Authors
- Siegel, WC; Hlatky, MA; Mark, DB; Barefoot, JC; Harrell, FE; Pryor, DB; Williams, RB
Published Date
- July 15, 1990
Published In
Volume / Issue
- 66 / 2
Start / End Page
- 179 - 182
PubMed ID
- 2196775
Pubmed Central ID
- 2196775
International Standard Serial Number (ISSN)
- 0002-9149
Digital Object Identifier (DOI)
- 10.1016/0002-9149(90)90584-n
Language
- eng
Conference Location
- United States