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60% bleed between post-operative days 3–4. No significant “timing” difference between smokers and non-smokers. Proportion of smokers among bleeders was 43%, double their share in the general population, 1.5 times cohort 1. Smoking among bleeders presenting on post-operative days 8–10, and after more than 10 days was 53% (p = 0.0005) and 60% (p < 0.0001), respectively.
