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Table 1 Baseline characteristics of the study 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

Variable

Study group

P value

 

Hyal-Joint® (n = 11)

Placebo (n = 9)

 

Men/women

4/7

5/4

0.653

Age, years, mean (SD)

57.7 (10.1)

54.6 (7.7)

0.448

Ethnicity

  

0.361

   Black

0

1

 

   Caucasian

1

1

 

   Hispanic

10

6

 

Height, cm, mean (SD)

164.7 (6.1)

164.1 (10.8)

0.889

Weight, kg, mean (SD

79.1 (26.3)

80.9 (20.7)

0.867

Heart rate, beats/min, mean (SD)

75.5 (12.3)

75.7 (12.4)

0.970

Systolic BP, mm Hg, mean (SD)

122.8 (16.4)

135.6 (21.7)

0.152

Diastolic BP, mm Hg, mean (SD)

77.8 (8.9)

84.3 (10.4)

0.148

Rescue medication use (paracetamol 500 mg)*

   

   No. capsules (range)

4 (0–19)

9 (0–29)

0.425

   Mean (SD)

6.8 (7.3)

9.9 (9.6)

 

WOMAC scores, mean (SD)

   

   Pain

10.4 (3.0)

10.1 (2.7)

0.848

   Stiffness

4.4 (1.0)

4.4 (1.0)

0.862

   Physical function

37.7 (7.4)

35.4 (11.5)

0.597

   Aggregated total symptoms

52.5 (10.8)

50.0 (14.4)

0.667

SF-36v2 scores, mean (SD)

   

   Physical functioning

30.8 (8.5)

27.1 (8.5)

0.342

   Role-physical

35.3 (8.3)

41.9 (7.8)

0.084

   Bodily pain

33.2 (4.8)

36.9 (4.8)

0.100

   General health

44.1 (12.3)

45.4 (10.3)

0.814

   Vitality

49.0 (11.3)

50.4 (11.7)

0.791

   Social functioning

37.5 (12.0)

43.5 (11.3)

0.268

   Role-emotional

36.1 (12.6)

40.3 (12.9)

0.467

   Mental health

40.3 (19.7)

47.5 (9.5)

0.326

   Physical component summary (PCS-36)

34.8 (6.3)

34.6 (6.4)

0.947

   Mental component summary (MCS-36)

43.6 (17.5)

50.6 (11.2)

0.317

  1. *Between screening and randomization visits.