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Table 3 Outcome measures over time by groupb

From: The effects of a home-based exercise intervention on elderly patients with knee osteoarthritis: a quasi-experimental study

  Intervention (n = 71) Control (n = 70) P-value‡ F P-value† Parameter estimate of GLM 95% CI of parameter estimate of GLM
Baseline
(mean ± SD)
12 weeks
(mean ± SD)
Baseline
(mean ± SD)
12 weeks
(mean ± SD)
Primary outcome
 WOMAC pain 7.34 ± 3.36 4.28 ± 3.30 7.19 ± 4.48 5.73 ± 3.54 0.683 7.575 0.007* −1.60 −2.75,-0.58
 WOMAC stiffness a 2 (0,3) 1 (0,3) 2 (1,4) 2 (1,4) 0.428 7.215 0.008* −0.79 −1.37, -0.21
Secondary outcomes
 FTSST, s 14.22 ± 3.10 12.13 ± 2.93 14.49 ± 4.10 14.13 ± 4.13 0.669 40.272 <0.001* −2.82 −3.70, -1.94
 TUG, s 13.30 ± 3.14 11.73 ± 1.97 13.02 ± 3.27 12.60 ± 2.81 0.611 21.178 <0.001* −1.37 − 1.96, -0.78
 6MWT, m 408.45 ± 60.54 442.39 ± 49.70 422.86 ± 49.29 417.57 ± 53.04 0.124 12.457 0.001* 29.81 13.11, 46.51
 AIMS2-SF total 75.06 ± 10.00 82.00 ± 9.96 76.57 ± 10.62 77.90 ± 9.52 0.433 13.263 <0.001* 5.08 2.32, 7.84
  AIMS2-SF-body 27.04 ± 4.50 29.54 ± 3.82 27.94 ± 4.77 28.43 ± 4.29 0.174 8.459 0.004* 1.65 0.53, 2.77
  AIMS2-SF-symptoms 10.75 ± 2.41 12.62 ± 1.85 10.89 ± 2.11 11.34 ± 1.78 0.998 11.548 0.001* 1.30 0.54, 2.05
  AIMS2-SF- emotionala 21 (20, 24) 25 (20, 25) 22 (20, 24) 22 (19.75, 24) 0.486 5.640 0.019* 1.11 0.19, 2.03
  AIMS2-SF- societya 16 (15, 18) 18 (15. 20) 17 (14, 20) 17 (14.75, 20) 0.316 5.403 0.022* 1.11 0.17, 2.05
  1. ‡ Independent t-test or Mann-Whitney U Test was used (week 0 intergroup comparison)
  2. † The general linear model was used to analyze differences between the intervention and control groups; community was a random factor; baseline scores were covariates; and the control group was the reference
  3. aMedian (Interquartile Range)
  4. bFTSST Five-times-sit-to-stand test, the unit of this outcome measure is seconds, TUG Timed up and go test, the unit of this outcome measure is seconds, 6MWT The six-minute walk test, the unit of this outcome measure is meters, WOMAC Western Ontario and McMaster Universities osteoarthritis index, pain (0–20), stiffness (0–8), AIMS2-SF Arthritis impact measurement scales 2 - short form, body (7–35), symptom (3–15), emotional (5–25), society (4–20), total (19–95), CI Confidence interval, SD Standard deviation, GLM General linear model. p < 0.05 was considered statistically significant