a statistical trendp = 0.049
In both of the two multivariate regression analyses with the EQ-5D Indexes after one and 2.5 years as the dependent variable, respectively, it was found that, out of the three adjustment variables, only the EQ-5D value at discharge was significantly correlated with the dependent variable after 1 year ( p = 0.017) and showed a statistical trend after 2.5 years ( p = 0.049), (see Additional file 6 : Table S3).