Table 8. Adjusted Difference in Improvement in Health-Related Quality of Life and Satisfaction after Hip Replacement.: A Comparison Between Patients with different Completed Levels of Schooling.

SF36 Sub-Scale	Adjusted Difference Between U+HVE+PHVSE and MVE+PMVE* (95%CI)	Adjusted Difference Between MVE+PMVE and LVE+ES+NFE** (95%CI)	Adjusted Difference Between U+HVE+PHVSE and LVE+ES+NFE*** (95%CI)
Physical Functioning	−1.96 (−8.56–4.64)	0.91 (−5.16–6.97)	−1.94 (−8.53–4.66)
Role-Physical	6.21 (−5.85–18.3)	2.66 (−8.04–13.4)	6.21 (−5.91–18.3)
Bodily Pain	−6.27 (−12.9–0.33)	7.28 (1.69–12.7)	−0.33 (−6.94–6.29)
General Health	−0.70 (−5.72–4.31)	1.57 (−2.95–6.08)	1.16 (−3.85–6.17)
Vitality	5.11 (0.09–10.1)	−1.08 (−5.76–3.61)	3.18 (−1.83–8.19)
Social Functioning	−0.50 (−7.57–6.57)	0.85 (−5.72–7.42)	−0.34 (−7.37–6.70)
Role Emotional	5.63 (−5.81–17.1)	−2.95 (−13.3–7.42)	1.89 (−9.59–13.4)
Mental Health	3.43 (−0.59–7.44)	−0.19 (−3.86–3.48)	2.98 (−0.99–6.95)
PCS	−1.64 (−4.07–0.79)	1.85 (−0.29–3.99)	−0.05 (−2.49–2.38)
MCS	2.69 (0.20–5.19)	−0.70 (−2.95–1.55)	1.93 (−0.55–4.41)
NRS Satisfaction	−0.3 (−0.8–0.2)	0.1 (−0.3–0.6)	−0.3 (−0.9–0.2)

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 THR in U+HVE+PHVSE patients, compared to MVE+PMVE patients.

^**Negative values indicate a higher mean improvement in HRQoL after THR in MVE+PMVE patients, compared to LVE+ES+NFE patients.

^***Negative values indicate a higher mean improvement in HRQoL after THR 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.