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Flowchart of subjects in the third year of follow-up. 22 patients (18%) in the Op group had a revision surgery with one patient having had two revisions, with a cumulative cost of $85,299 and QALY gain of 0.9. In the Non-Op group, the cumulative cost was $19,195 and QALY gain of 0.2. This results in an ICER of $93,405 per QALY gained
