Skip to main content
. 2013 Apr 3;8(4):e59500. doi: 10.1371/journal.pone.0059500

Table 5. Improvement in Health-Related Quality of Life and Satisfaction after Knee Replacement: A Comparison Between Patients with Mild to Moderate and Severe Radiographical Pre-Operative Osteoarthritis.

SF36 Sub-Scale Kellgren Grade 0–2:Probability of Achieving a MCID (95%CI) Kellgren Grade 3+4:Probability of Achieving a MCID (95%CI) Kellgren Grade 0–2 VS Kellgren Grade 3+4:Adjusted Odds Ratio (95%CI) P-value
Physical Functioning 5/22∶22.7% (10.1–43.4) 105/191∶55.0% (47.9–61.9) 5.44 (1.45–20.3) 0.01
Role-Physical 9/22∶40.9% (23.3–61.3) 88/191∶46.1% (39.2–53.2) 1.46 (0.49–4.32) 0.50
Bodily Pain 15/22∶68.2% (47.3–83.6) 136/191∶71.2% (64.4–77.2) 1.15 (0.32–4.16) 0.83
General Health 9/22∶40.9% (23.3–61.3) 122/191∶63.9% (56.9–70.4) 3.56 (1.23–10.4) 0.02
Vitality 8/22∶36.4% (19.7–57) 86/191∶45.0% (38.1–52.1) 1.09 (0.35–3.44) 0.88
Social Functioning 7/22∶31.8% (16.4–52.7) 98/191∶51.3% (44.3–58.3) 2.84 (0.87–9.32) 0.08
Role Emotional 6/22∶27.3% (13.2–48.2) 41/191∶21.5% (16.2–27.8) 0.85 (0.26–3.02) 0.85
Mental Health 8/22∶36.4% (19.7–57) 79/191∶41.4% (34.6–48.4) 2.79 (0.70–11.2) 0.15
NRS Satisfaction >8 9/22∶40.9% (23.3–61.3) 116/191∶60.7% (53.7–67.4) 2.25 (0.78–6.52) 0.14

Odds Ratios >1 indicate a higher probability of achieving a Minimal Clinically Important Difference in HRQoL after THR in patients with Kellgren Grade 3+4, compared to Grade 0–2.

The odds ratios adjusted for age, sex, Charnley Comorbidity Classification and BMI and stratified for quartiles of follow-up.