borderline significancep = 0.052
HR 1.97 (95% CI 1.06–3.64), p = 0.031; HR after propensity matching for MR-grade at discharge 2.54 (95% CI 1.31–4.91), p = 0.006] with a borderline significance for the total follow-up period [crude HR 1.46 (95% CI 1.00–2.15), p = 0.052 as well as adj.