Table 3.
Combination of UCT and SSS (univariable and multivariate analysis for cardiac events)
| Group | UCT | SSS | Number of patients | Number of patients with cardiac events (%) | Annual event rate (%) | Unadjusted HR (95% CI) | p Value | Adjusted HR* (95% CI) | p Value |
|---|---|---|---|---|---|---|---|---|---|
| A | 0 | <4 | 75 | 2 (2.7) | 1.1 | 1 | 1 | ||
| B | ≥1 | <4 | 30 | 2 (6.7) | 2.0 | 1.93 (0.23 to 16.16) | 0.515 | 1.76 (0.21 to 15.11) | 0.579 |
| C | 0 | ≥4 | 48 | 6 (13.0) | 5.7 | 5.15 (1.19 to 35.17) | 0.0279 | 2.73 (0.55 to 19.93) | 0.225 |
| D | ≥1 | ≥4 | 51 | 17 (33.0) | 12.9 | 11.9 (3.40 to 75.19) | <0.0001 | 6.84 (1.83 to 44.5) | 0.0026 |
*HR was adjusted for LVEF, time since CABG and EuroSCORE II.
CABG, coronary-artery-bypass grafting; EuroSCORE II, European System for Cardiac Operative Risk Evaluation risk model; LVEF, left ventricular ejection fraction; SSS, summed stress score; UCT, unprotected coronary territory.