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Table 5 Cumulative costs, QALYs and life-years 1–5

From: Comparative cost-effectiveness of surgery, angioplasty, or medical therapy in patients with multivessel coronary artery disease: MASS II trial

Time since randomization, years Cumulative costs, $ Difference costs, $ Cumulative QALYs Difference QALYs Cumulative LYs Difference LYs
CABG PCI MT CABG vs. MT PCI vs. MT PCI vs. CABG CABG PCI MT CABG vs. MT PCI vs. MT PCI vs. CABG CABG PCI MT CABG vs. MT PCI vs. MT PCI vs. CABG
1 2213 2208 645 1568 1563 − 5 0.77 0.78 0.77 0.00 0.01 0.01 0.97 0.96 0.99 − 0.02 − 0.03 − 0.01
2 2388 2428 958 1430 1470 40 1.54 1.54 1.51 0.03 0.03 0.00 1.90 1.88 1.94 − 0.04 − 0.06 − 0.02
3 2508 2585 1243 1265 1342 77 2.29 2.31 2.31 − 0.02 0.00 0.02 2.81 2.80 2.85 − 0.04 − 0.05 − 0.01
4 2609 2759 1443 1166 1317 150 3.04 3.07 2.88 0.16 0.19 0.03 3.70 3.72 3.71 − 0.01 0.01 0.02
5 2753 3002 1740 1013 1262 249 3.77 3.80 3.54 0.23 0.26 0.03 4.56 4.59 4.55 0.01 0.04 0.03
  1. 5000 replications
  2. MT medical treatment, PCI percutaneous coronary intervention, CABG coronary artery bypass graft, QALY quality-adjusted life-year, LYs life-years, $ American dollar