Serious adverse events during follow-up
There were significantly fewer patients being readmitted to hospital within 12 months of surgery and fewer patients experienced SAE(s) in the low pressure group compared to the high pressure group (admissions: 9/44; 20% vs 15/44; 34%; incidence rate ratio IRR (low:high) = 0.31, 95%CI 0.15, 0.65, p=0.0008; one or more SAE: 9/48, 19% vs. 18/48, 38%;. OR = 0.39, 95%CI 0.15, 0.98, p=0.040), but the rate of admissions and SAEs did not vary by harvest technique (admissions: IRR (pedicled:conventional) = 0.84, 95%CI 0.44, 1.58, p=0.59; one or more SAE: OR = 1.13, 95%CI (0.45, 2.82), p=0.79, Figure 3, Appendix Tables A10 and A11 ).