Improving the positive predictive value of exercise testing in women

Objective: To identify exercise test variables that can improve the positive predictive value of exercise testing in women. Design: Cohort study. Setting: Regional cardiothoracic centre. Subjects: 1286 women and 1801 men referred by primary care physicians to a rapid access chest pain clinic, of who...

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Veröffentlicht in:British heart journal 2003-12, Vol.89 (12), p.1416-1421
Hauptverfasser: Wong, Y K, Dawkins, S, Grimes, R, Smith, F, Dawkins, K D, Simpson, I A
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Sprache:eng
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Zusammenfassung:Objective: To identify exercise test variables that can improve the positive predictive value of exercise testing in women. Design: Cohort study. Setting: Regional cardiothoracic centre. Subjects: 1286 women and 1801 men referred by primary care physicians to a rapid access chest pain clinic, of whom 160 women and 406 men had ST depression of at least 1 mm during exercise testing. The results for 136 women and 124 men with positive exercise tests were analysed. Main outcome measures: The proportion of women with a positive exercise test who could be identified as being at low risk for prognostic coronary heart disease and the resulting improvement in the positive predictive value. Results: Independently of age, an exercise time of more than six minutes, a maximum heart rate of more than 150 beats/min, and an ST recovery time of less than one minute were the variables that best identified women at low risk. One to three of these variables identified between 11.8% and 41.2% of women as being at low risk, with a risk for prognostic disease of between 0−11.5%. The positive predictive value for the remaining women was improved from 47.8% up to 61.5%, and the number of normal angiograms was potentially reducible by between 21.1−54.9%. By the same criteria, men had higher risks for prognostic disease. Conclusions: A strategy of discriminating true from false positive exercise tests is worthwhile in women but less successful in men.
ISSN:1355-6037
0007-0769
1468-201X
DOI:10.1136/heart.89.12.1416