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Table 2 Evaluation of the experimental formulation during 12 months of intervention and 6 months of follow up in WOMAC subscales

From: Effectiveness of intra-articular injections of sodium bicarbonate and calcium gluconate in the treatment of osteoarthritis of the knee: a randomized double-blind clinical trial

WOMAC subscales SBCG1 SBCG2
Score Change from baseline Score Change from baseline
Pain     
Baseline 5.8 (5.2, 6.4) a   5.6 (5.0, 6.2)  
3 mo. 1.9 (1.1, 2.8) b −4.0 (−7.0, −5.1) 2.4 (1.7, 3.2) −3.2 (−3.9, −2.5)
8 mo. 1.6 (1.0, 2.2) −4.2 (−9.1, −5.1) 1.5 (1.0, 2.0) −4.0 (−4.9, −3.2)
12 mo. 1.1 (0.6, 1.7) −4.5 (−10.5, −5.3) 1.3 (0.8, 1.9) −4.5 (−5.2, −3.8)
18 mo. 1.2 (0.5, 1.9) −4.3 (−8.4, −5.3) 1.0 (0.5, 1.5) −4.8 (−5.6, −4.0)
Stiffness     
Baseline 5.9 (5.0, 6.7)   6.3 (5.6, 7.0)  
3 mo. 2.0 (1.3, 2.6) −4.2 (−9.0, −5.1) 2.1 (1.3, 2.9) −4.0 (−4.9, −3.2)
8 mo. 1.0 (0.5, 1.5) −4.8 (−9.3, −5.8) 1.5 (0.9, 2.0) −4.8 (−5.7, −3.8)
12 mo. 0.5 (0.2, 0.9) −5.2 (−10.7, −6.2) 1.3 (0.6, 2.0) −4.9 (−5.9, −4.0)
18 mo. 0.7 (0.0, 1.4) −5.0 (−7.9, −6.3) 1.1 (0.4, 1.7) −5.0 (−6.0, −4.0)
Physical functioning     
Baseline 5.9 (5.2, 6.6)   6.2 (5.4, 6.9)  
3 mo. 2.1 (1.5, 2.8) −3.8 (−7.6, −4.9) 2.1 (1.5, 2.8) −3.8 (−4.5, −3.1)
8 mo. 1.4 (0.9, 1.9) −4.6 (−10.2, −5.5) 1.5 (1.1, 2.0) −4.7 (−5.6, −3.9)
12 mo. 0.6 (0.4, 0.9) −5.1 (−13.3, −5.9) 1.2 (0.6, 1.7) −5.2 (−6.1, −4.3)
18 mo. 0.7 (0.3, 1.2) −4.8 (−9.6, −5.9) 1.0 (0.5, 1.4) −5.2 (−6.2, −4.3)
Global score     
Baseline 17.5 (15.7, 19.3)   18.1 (16.3, 19.9)  
3 mo. 6.0 (4.2, 7.9) −11.9 (−9.1, −14.7) 6.7 (4.7, 8.7) −11.1 (−13.1, −9.1)
8 mo. 4.2 (2.7, 5.6) −13.5 (−10.4, −16.1) 4.5 (3.1, 5.9) −13.6 (−15.9, −11.2)
12 mo. 2.3 (1.5, 3.1) −14.8 (−14.2, −17.0) 3.8 (2.1, 5.5) −14.6 (−16.9, −12.4)
18 mo. 2.6 (0.8, 4.4) −14.0 (−9.7, −17.1) 3.1 (1.5, 4.6) −15.0 (−17.5, −12.6)
  1. aAll values are means (95% confidence interval).
  2. bAll post-treatment measurements were significantly different from baseline value. There were no significant differences between treatments.