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Table 2 SF-36 results: ANOVA to describe changes over time for regular scoring (0–100) and norm-based scaling, each

From: Health-related quality of life and clinical outcomes following medial open wedge high tibial osteotomy: a prospective study

  (1)
Preoperative
M (SD)
(2)
6 months
M (SD)
(3)
12 months
M (SD)
(4)
18 months
M (SD)
F Df p η2
PF (Physical Functioning)
NBS
RS
27.4 (±16.9)
52.4 (±25.9)
35.9 (±17.1)
66.8 (±25.0)
42.4 (±14.6)
76.7 (±22.7)
44.7 (±13.9)
80.5 (±21.3)
37.452 3 <0.001** 0.327
RP (Role Physical)
NBS
RS
33.0 (±15.3)
38.0 (±43.2)
41.6 (±14.5)
61.7 (±43.1)
44.9 (±14.2)
72.1 (±40.1)
46.3 (±13.9)
75.3 (±41.0)
22.109 2.571 <0.001** 0.223
BP (Bodily Pain)
NBS
RS
34.5 (±8.2)
38.4 (±21.1)
41.0 (±9.4)
58.1 (±24.5)
45.6 (±9.3)
67.9 (±24.8)
46.5 (±10.5)
70.0 (±28.4)
46.748 2.843 <0.001** 0.378
GH (General Health)
NBS
RS
46.6 (±10.9)
60.8 (±20.2)
50.6 (±10.2)
68.3 (±19.8)
51.7 (±10.6)
70.8 (±19.3)
50.8 (±11.9)
68.8 (±22.8)
10.469 2.906 <0.001** 0.121
VT (Vitality)
NBS
RS
43.0 (±11.7)
52.7 (±19.7)
47.1 (±11.3)
59.6 (±18.9)
48.9 (±11.3)
62.6 (±18.8)
49.1 (±12.0)
63.0 (±20.5)
10.093 2.764 <0.001** 0.117
SF (Social Functioning)
NBS
RS
41.6 (±13.1)
74.8 (±22.8)
45.6 (±12.8)
81.8 (±21.7)
46.4 (±13.4)
83.2 (±23.4)
46.9 (±12.2)
83.9 (±21.7)
6.093 2.865 0.001** 0.074
RE (Role Emotional)
NBS
RS
38.8 (±19.1)
64.2 (±46.4)
43.8 (±16.0)
75.9 (±39.9)
46.3 (±14.5)
82.2 (±35.7)
47.6 (±13.9)
85.4 (±34.1)
10.612 2.178 <0.001** 0.121
MH (Mental Health)
NBS
RS
46.4 (±12.8)
68.6 (±20.1)
48.3 (±12.0)
71.7 (±18.6)
50.5 (±11.2)
75.1 (±17.7)
50.4 (±11.9)
75.1 (±18.7)
6.002 2.812 .001** 0.073
PCS (Physical Component Summary Score)
NBS
RS
30.2 (±13.4)
39.5 (±13.5)
44.5 (±12.9)
45.9 (±13.5)
40.993 2.368 <0.001** 0.350
MCS (Mental Component Summary Score
NBS
RS
46.0 (±14.9)
48.5 (±13.7)
49.3 (±12.6)
49.5 (±12.4)
3.761 2.543 0.017* 0.047
  1. NBS Norm-Based Scaling, RS Regular Scoring; Df corrected according to Levene-Test of Significance, if necessary