Significant Improvement in Short-Term Mortality in Women Undergoing Coronary Artery Bypass Surgery (1991 to 2004)
Karin H. Humphries, MBA, DSc*, , , ,*,
Min Gao, PhD,
Aihua Pu, MSc,
Samuel Lichtenstein, MD and
Christopher R. Thompson, MD*
* Division of Cardiology
Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
Centre for Health Evaluation and Outcomes Sciences, St. Paul's Hospital, Vancouver, British Columbia, Canada
Provincial Health Services Authority, Vancouver, British Columbia, Canada
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Figure 1 Post-CABG 30-Day Mortality (%) by Gender and Age Group
The odds ratios (OR) shown are the unadjusted ORs for post-coronary artery bypass graft (CABG) 30-day mortality in women compared with men. *p  0.05.
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Figure 3 Odds Ratio Plot for 30-Day Mortality (Model #4)
Urgency status levels: Priority I, within 72 h; II, within 6 weeks; III, within 3 months. Reference levels: age <50 years old, 1-vessel or 2-vessel disease, ejection fraction >35%, urgency status Priority II and III, cross (X)-clamp time 1 h, surgical years 1991/1992. ACS = acute coronary syndrome; HTN = hypertension.
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Figure 4 Adjusted Odds Ratios (Women Vs. Men) for 30-Day Mortality by Surgical Year
Odds ratios (women vs. men) and 95% confidence intervals for 30-day mortality are adjusted for age, acute coronary syndrome, heart failure, renal disease, diabetes, stroke, ejection fraction, pulmonary hypertension, prior surgery, urgency status, cross-clamp time, off pump (yes/no), arterial graft used, and number of bypass grafts.
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Figure 5 Association Between BSA (in Quintiles) and Mortality by Gender
BSA (m2) = ([Height (cm) · Weight (kg)]/3,600)1/2. BSA = body surface area; CABG = coronary artery bypass graft.
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Figure 6 Gender Difference in the Number of Bypass Grafts Used Relative to the Number of Diseased Vessels
Proportions of women and men receiving the specified number of grafts (range 1 to 8) stratified by the extent of coronary disease.
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