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Table 2 Health-related quality of life of the study participants and comparison with Canadian normative data (n = 197)

From: Waiting for total knee replacement surgery: factors associated with pain, stiffness, function and quality of life

  Mean score(SD) 95% CI SF-36 Canadian normative data
(Mean and SD)
95% CI
SF-36     
Physical functioning 24.3 (17.9)* 21.8 – 26.8 75.7 (22.2) 74.9 – 76.5
Role-physical 39.3 (25.6)* 35.7 – 42.9 76.2 (36.5) 74.9 – 77.5
Bodily pain 27.5 (11.7)* 25.8 – 29.1 74.0 (23.9) 73.1 – 74.8
General health 37.1 (10.4)* 35.6 – 38.6 73.5 (18.4) 72.8 – 74.1
Vitality 39.5 (13.4)* 37.6 – 41.4 67.7 (18.1) 67.0 – 68.3
Social functioning§ 40.9 (15.2)* 38.8 – 43.0 87.0 (19.8) 86.2 – 87.7
Role-emotional§ 69.8 (26.3)* 66.1 – 73.5 83.4 (32.8) 82.2 – 84.6
Mental health§ 53.4 (11.4)* 51.8 – 55.0 79.3 (15.0) 78.8 – 79.8
Physical component scale (PCS)§ 28.2 (6.4)* 27.3 – 29.1 47.2 (9.7) 46.8 – 47.6
Mental component scale (MCS)§ 42.9 (8.1)* 41.7 – 44.0 53.7 (8.3) 53.4 – 54.0
  1. A higher score signs a better health-related quality of life
  2. Age matched normative data
  3. § n = 196
  4. * Significantly lower (worse) than the Canadian normative data, p < 0.05