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

Table 3 Outcome measures over time by group^b

	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)	P-value‡	F	P-value†	Parameter estimate of GLM	95% CI of parameter estimate of GLM
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- emotional^a	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- society^a	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

‡ Independent t-test or Mann-Whitney U Test was used (week 0 intergroup comparison)
† 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
^aMedian (Interquartile Range)
^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

ISSN: 1471-2474