“…A meta-analysis of propensity-matched studies (PMS) (12) showed that the operative mortality was not different between the RA and RITA [odds ratio (OR) 1.53, P=0.07], but demonstrated a statistically significant 25% risk reduction of late death and a lower risk of repeat revascularization for the RITA when compared to the RA (HR 0.75, P=0.028 and 0.37, P=0.03 respectively). In a subsequent PMS study (13) comparing the RITA and RA as second arterial conduits in CABG, Benedetto and colleagues demonstrated a comparable mortality between the two groups during the first 4 years of follow-up (HR 1.00, P=0.98). However, after 4 years the RITA was associated with a significant reduction in late mortality compared to RA (HR 0.67, P=0.02).…”