Table 5. Improvement in Health-Related Quality of Life and Satisfaction after Knee Replacement:: A Comparison Between Patients with different Completed Levels of Schooling.

SF36 Sub-Scale	University, Higher Vocational Education and Preparatory Higher Vocational & Scientific Education: n = 42	Middle Vocational Education and Preparatory Middle Vocational Education n = 98	Lower Vocational Education, Elementary Schooling and No Formal Education n = 122
Physical Functioning	20.4 (12.4–28.5)	14.0 (8.70–19.3)	10.3 (6.40–14.2)
Role-Physical	31.5 (15.6–47.5)	25.2 (14.4–35.9)	15.6 (7.40–23.7)
Bodily Pain	24.9 (17.6–32.2)	25.5 (19.7–31.2)	21.0 (16.5–25.5)
General Health	4.00 (−0.60–8.60)	−1.60 (−5.20–2.10)	−3.60 (−6.90–−0.30)
Vitality	1.30 (−3.60–6.30)	−1.00 (−4.70–2.80)	2.60 (−0.90–6.10)
Social Functioning	11.6 (2.80–20.4)	7.80 (1.80–13.8)	8.80 (4.40–13.2)
Role Emotional	9.50 (−1.50–20.5)	3.40 (−6.30–13.1)	10.9 (2.60–19.2)
Mental Health	3.30 (0.20–6.40)	1.30 (−2.30–4.90)	6.20 (3.40–9.10)
PCS	7.70 (4.20–11.3)	7.00 (4.90–9.00)	4.20 (2.70–5.70)
MCS	−0.40 (−3.00–2.20)	−1.70 (−3.7–0.30)	1.70 (0.00–3.40)
NRS Satisfaction	8.3 (7.6–9.1)	8.1 (7.6–8.6)	7.9 (7.4–8.4)