Table 2 Baseline characteristics of participants
Parameters | EC-HC-II n = 37 | HC-II n = 38 | Glucosamine HCl n = 38 | Placebo n = 38 | p value |
|---|---|---|---|---|---|
Age, mean (SD; years) | 57.3 (7.14) | 59.8 (7.66) | 59.1 (8.22) | 56.4 (6.42) | 0.240 |
Female, n (%) | 33 (89.2) | 30 (78.9) | 32 (84.2) | 33 (86.8) | 0.638 |
Height, mean (SD; cm) | 156.9 (6.36) | 155.8 (7.78) | 157.0 (7.34) | 158.5 (6.34) | 0.480 |
BMI, mean (SD; kg/m2) | 23.9 (3.49) | 24.4 (3.26) | 24.6 (2.6) | 24.4 (3.34) | 0.738 |
Weight, mean (SD; kg) | 58.5 (8.57) | 59.4 (9.69) | 61.0 (8.72) | 61.2 (10.14) | 0.533 |
Menopause, n (% of women) | 29/33 (87.9) | 22/30 (73.3) | 24/32 (75.0) | 20/33 (60.6) | 0.258 |
Smoking habit, n (%) | 2 (5.4) | 0 (0.0) | 0 (0.0) | 3 (7.9) | 0.276 |
Alcohol addiction, n (%) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | NA |
Knee OA grade according to Kellgren–Lawrence classification system, n (%) | |||||
 1 | 30 (81.1) | 25 (65.8) | 22 (57.9) | 26 (68.4) | 0.299 |
 2 | 4 (10.8) | 10 (26.3) | 13 (34.2) | 11 (28.9) |  |
 3 | 3 (8.1) | 3 (7.9) | 3 (7.9) | 1 (2.6) |  |