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Table 2 WOMAC Index scores during the study period in 16 evaluable subjects

From: Effect of a natural extract of chicken combs with a high content of hyaluronic acid (Hyal-Joint®) on pain relief and quality of life in subjects with knee osteoarthritis: a pilot randomized double-blind placebo-controlled trial

Study groups and time points

WOMAC Index scores, mean (SD)

 

Pain

Stiffness

Physical function

Total symptoms

Hyal-Joint® (n = 8)

    

   Baseline

10.4 (3.6)

4.2 (1.0)

36.3 (7.7)

50.9 (12.0)

   Week 4

8.8 (3.4)

3.9 (1.6)

28.1 (9.2)

40.8 (13.6)

   Week 8

6.3 (4.0)

2.9 (1.9)

23.1 (15.1)

32.3 (20.8)

   Change baseline vs week 4

-1.6 (2.7)

-0.4 (1.5)

-8.1 (6.3)

-10.1 (9.6)

P value

0.135

0.504

0.008

0.020

   Change baseline vs week 8

-4.1 (3.4)

-1.4 (2.0)

-13.1 (12.0)

-18.6 (16.8)

P value

0.012

0.092

0.018

0.016

Placebo (n = 8)

    

   Baseline

10.4 (2.7)

4.5 (1.9)

37.4 (10.6)

52.3 (13.6)

   Week 4

8.3 (3.0)

3.5 (1.9)

30.4 (10.7)

42.1 (17.7)

   Week 8

6.4 (2.7)

2.9 (1.0)

27.3 (10.7)

36.5 (13.7)

   Change baseline vs week 4

-2.1 (3.3)

-1.0 (2.1)

-7.0 (10.8)

-10.1 (15.3)

P value

0.113

0.227

0.110

0.103

   Change baseline vs week 8

-4.0 (2.8)

-1.6 (0.9)

-10.1 (8.6)

-15.8 (11.4)

P value

0.005

0.002

0.012

0.006