Adjusted Difference in Improvement in Health-Related Quality of Life and Satisfaction after Knee Replacement::A Comparison Between Patients with different Completed Levels of Schooling.

U+HVE+PHVSE: University, Higher Vocational Education and Preparatory Higher Vocational & Scientific Education; MVE+PMVE: Middle Vocational Education and Preparatory Middle Vocational Education; LVE+ES+NFE: Lower Vocational Education, Elementary Schooling and No Formal Education.*Negative values indicate a higher mean improvement in HRQoL after TKR in U+HVE+PHVSE patients, compared to MVE+PMVE patients.**Negative values indicate a higher mean improvement in HRQoL after TKR in MVE+PMVE patients, compared to LVE+ES+NFE patients.***Negative values indicate a higher mean improvement in HRQoL after TKR in U+HVE+PHVSE patients, compared to LVE+ES+NFE patients.The mean differences between education level are adjusted for age, sex, Body Mass Index and Charnley Classification of Comorbidity and stratified for quartiles of follow-up.