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Table 3 Changes in SF-36 subscales following 6 months of treatment. Results are presented as mean (SD) [95 % confidence interval, CI]

From: A non-invasive, home-based biomechanical therapy for patients with spontaneous osteonecrosis of the knee

  Pre-treatment 3 months 6 months P for GLM test P for Friedman test
Overall score 41.6 (16.6)
[33.1–50.1]
52.4 (17.5)
[43.4–61.4]
54.5 (22.5)
[42.9–66.1]
P = 0.017 P = 0.003
Physical functioning 36.5 (28.2)
[22.0–51.0]
49.7 (21.1)
[38.9–60.6]
53.2 (27.9)
[38.9–67.6]
P = 0.032 P = 0.032
Pain 32.5 (23.5)
[20.4–44.6]
54.6 (24.0)
[42.2–66.9]
58.8 (27.5)
[44.7–73.0]
P = 0.002 P = 0.006
Limitation due to physical health 22.1 (36.3)
[3.4–40.7]
39.7 (41.5)
[18.4–61.1]
41.2 (46.7)
[17.2–65.2]
P = 0.097 P = 0.008
Vitality 48.5 (14.2)
[41.2–55.8]
53.8 (14.0)
[46.6–61.0]
51.5 (18.4)
[42.0–60.9]
P = 0.543 P = 0.049
Emotional well-being 54.4 (17.0)
[45.6–63.1]
62.6 (14.6)
[55.1–70.1]
63.5 (18.7)
[53.9–73.1]
P = 0.023 P = 0.129
Limitation due to mental health 29.4 (42.3)
[7.7–51.2]
39.2 (41.2)
[18.0–60.4]
49.0 (48.8)
[24.0–74.1]
P = 0.136 P = 0.414
Social functioning 46.3 (21.5)
[35.2–57.4]
66.2 (22.0)
[54.9–77.5]
65.4 (26.0)
[52.1–78.8]
P = 0.010 P = 0.002
General health 55.6 (14.4)
[48.2–63.1]
57.4 (15.3)
[49.5–65.2]
57.8 (17.0)
[49.1–66.6]
P = 0.570 P = 0.678
PCS 36.7 (19.4)
[26.7–46.6]
50.3 (21.2)
[39.4–61.2]
52.8 (26.1)
[39.4–66.2]
P = 0.017 P = 0.005
MCS 44.7 (17.5)
[35.7–53.6]
55.5 (18.6)
[45.9–65.0]
57.4 (23.9)
[45.1–69.7]
P = 0.026 P = 0.028
  1. PCS physical component summary, MCS mental component summary