Baseline Demographics
The original database included 2,912 consecutive patients who had
undergone MV surgery at the University of Alberta between January 1,
2004, and December 31, 2018 (Figure 1). 1,239 patients underwent an MVR
and met the inclusion criteria. Baseline demographic data before and
after propensity matching are summarized in Tables 1 & 2 respectively.
Prior to propensity matching, males were found to be older than females,
more likely to have renal disease, peripheral vascular disease, a prior
MI, prior CABG, an LVEF <30%, and a higher STS risk score
(Table 1). After propensity score matching, there were no significant
differences in preoperative or intraoperative characteristics between
females and males (Table 2).