Table 4.
Association between presence of reported angina in past 4 weeks and myocardial perfusion defects with mental or conventional (exercise or pharmacological) stress, by sex
| Men N = 601) |
Women (N = 306) |
|||||
|---|---|---|---|---|---|---|
| Risks and risk ratios for ischemia (categorical variable), angina vs. no angina | ||||||
|
| ||||||
| Frequency of Ischemia | Frequency of Ischemia | |||||
| No angina | Angina | Adjusted PRRa (95% CI) |
No angina | Angina | Adjusted PRRa (95% CI) |
|
|
| ||||||
| Mental stress | 11% | 11% | 1.09 (0.66 to 1.82) | 10% | 19% | 1.90 (1.04 to 3.46) |
| Conventional stressb | 28% | 29% | 1.09 (0.82 to 1.45) | 27% | 33% | 1.33 (0.92 to 1.90) |
|
| ||||||
| Percent of ischemic myocardium (continuous variable), angina vs. no angina | ||||||
|
| ||||||
| Percent Ischemic Myocardium | Percent Ischemic Myocardium | |||||
| No angina | Angina | Adjusted βa (95% CI) |
No angina | Angina | Adjusted βa (95% CI) |
|
|
| ||||||
| Mental stress | 1.01% | 1.15% | 0.15 (−0.37 to 0.67) | 0.81% | 1.81% | 1.03 (0.36 to 1.70) |
| Conventional stressb | 3.31% | 3.52% | 0.21 (−0.88 to 1.31) | 2.98% | 3.62% | 0.65 (−0.77 to 2.06) |
PRR (prevalence risk ratio): Estimated prevalence of having mental or conventional stress ischemia in subjects with angina in the past 4 weeks, compared with subjects with no angina
β: Estimated difference in mental/conventional stress ischemia percentage score between subjects with angina vs. no angina in the past 4 weeks
Adjusted for demographic factors (age, sex, race, and poverty status), coronary artery disease risk factors (current smoking status, hypertension, dyslipidemia, diabetes, and body mass index), and coronary artery disease severity indicators (previous myocardial infarction, history of heart failure, and history of revascularization).
For conventional stress, 22 observations were missing, with final sample size = 891