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Table 3 Baseline characteristics of treatment groups

From: Early relief of osteoarthritis symptoms with a natural mineral supplement and a herbomineral combination: A randomized controlled trial [ISRCTN38432711]

  Placebo Group A Group B Group C
N completed (started) 23 (29) 20 (25) 22 (24) 26 (29)
Age (years) 51.3 ± 1.0 50.5 ± 1.7 52.3 ± 1.8 52.1 ± 1.6
Gender (F: M %) 72:28 76:24 75:25 52:48
ARA Functional Class II/III, % 69 : 31 76 : 24 67 : 33 69 : 31
Kellgren Lawrence Criteria Grade 2/3, % 76 : 24 83 : 17 83 : 17 82 : 18
WOMAC A 8.7 ± 1.0 9.1 ± 1.2 8.0 ± 1.1 8.7 ± 1.0
WOMAC B 3.4 ± 0.5 3.5 ± 0.5 3.3 ± 0.4 3.3 ± 0.4
WOMAC C 36.4 ± 3.9 38.4 ± 4.0 34.7 ± 4.2 32.8 ± 4.3
WOMAC Total 48.6 ± 5.2 51.1 ± 6.4 46.4 ± 5.6 44.8 ± 5.5
VAS 72.9 ± 2.0 72.9 ± 3.0 70.1 ± 2.5 70.7 ± 2.4
  1. Data expressed as a % of total or mean ± sem. Group A = High dose sierrasil, Group B = Low dose sierrasil, Group C = Low dose sierrasil + cat's claw extract. None of the entry assessments were significantly different amongst the four randomized groups.