Table 4.

Mean different from base line (95% CI) of Knee Injury and Osteoarthritis Outcome Scores (KOOS)

		2 wk	4 wk	6 wk	8 wk	10 wk
Pain	Hip exercise	8.83 (1.82–15.8) p = 0.01	14.45 (7.97–20.9) p < 0.01	15.88 (9.25–22.5) p < 0.01	17.23 (10.6–23.8) p < 0.01	18.68 (11.8–25.6) p < 0.01
	Control	5.05(−1.69–11.8) p = 0.14	7.94 (1.04–14.8) p = 0.02	10.24 (4.22–16.3) p < 0.01	14.32 (8.30–20.3) p < 0.01	16.69 (10.9–22.5) p < 0.01
Symptoms	Hip exercise	9.95 (3.14–16.8) p < 0.01	9.85 (2.97–16.7) p < 0.01	8.23 (1.39–15.1) p < 0.01	11.75 (4.83–18.7) p = 0.02	14.65 (8.20–21.1) p < 0.01
	Control	3.68(−2.70–10.1) p = 0.26	5.14 (− 1.14–11.4) p = 0.11	6.21 (0.38–12) p = 0.04	10.47 (4.70–16.3) p < 0.01	9.09 (2.84–15.3) p < 0.01
Activities of daily living	Hip exercise	8.14 (1.05–15.2) p = 0.02	14.05 (7.78–20.3) p < 0.01	14.84 (8.63–21) p < 0.01	17.08 (11.1–23.0) p < 0.01	15.19 (8.77–21.6) p < 0.01
	Control	4.91(−1.86–11.7) p = 0.16	7.29 (0.38–14.2) p = 0.04	8.72 (1.98–15.5) p = 0.01	11.18 (4.47–17.9) p < 0.01	13.84 (7.29–20.4) p < 0.01
Sports and recreation	Hip exercise	5.24(−5.54–16) p = 0.34	3.89(−6.02–13.8) p = 0.44	9.99(− 1.14–21.1) p = 0.08	11.22(− 1.35–23.8) p = 0.08	17.79 (5.08–30.5) p < 0.01
	Control	4.55(− 13.8–7.53) p = 0.4	6.25(− 6–15.1) p = 0.24	10.13(− 4.22–16.7) p = 0.07	13.34(− 0.74–21) p = 0.02	22.69 (2.6–24.1) p < 0.01
Quality of life	Hip exercise	8.4 (0.35–16.5) p = 0.04	13.92 (5.38–22.5) p < 0.01	17.28 (8.59–26) p < 0.01	19.92 (11–28.9) p < 0.01	24.12 (15.6–32.6) p < 0.01
	Control	7.32(− 0.36–15) p = 0.06	10.2 (2.33–18.1) p = 0.01	13.74 (6.09–21.4) p < 0.01	20.1 (12.4–27.8) p < 0.01	27.09 (19.3–34.9) p < 0.01